Polymer International最新文献_第9页

A survey of recent publications on polymers employing reactive, halogen-free flame-retardant functionalities 关于采用活性无卤阻燃功能聚合物的最新出版物概览

IF 2.9 4区化学

Polymer International Pub Date : 2024-07-09 DOI: 10.1002/pi.6673

Benjamin J Stovall, Timothy E Long

{"title":"A survey of recent publications on polymers employing reactive, halogen-free flame-retardant functionalities","authors":"Benjamin J Stovall, Timothy E Long","doi":"10.1002/pi.6673","DOIUrl":"10.1002/pi.6673","url":null,"abstract":"Modern society relies heavily on producing commercial and industrial plastics to improve the quality and quantity of our lives. However, increased fire risks threaten commercial operations and the potential impact of high-performance electronic and transportation technologies that utilize polymeric materials. Despite significant monitoring and reduction of commonly used halogenated flame retardants, their worldwide usage still poses environmental hazards. Many non-halogenated flame-retardant compounds are viable additives for synthetic polymers; however, their incorporation often results in reduced composite homogeneity and mechanical strength. This review focuses on reactive flame retardants and the effect of polymer structure on inherent flame retardance in recent studies. The synthesis and characterization of polymeric systems (e.g. polyurethanes, polyamides, polyimides, polyesters and epoxy resins) are discussed in terms of structure–flame-retardant performance using a complement of analytical tools, including thermogravimetric analysis, cone calorimetry, limiting oxygen index and UL 94 testing. These commercially important polymeric systems represent a broad compositional space for future adaptation and the discovery of increasingly modular polymeric materials with, while also contributing to the fundamental understanding of unique combinations of gas- and condensed-phase mechanisms of flame retardance. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 9","pages":"677-694"},"PeriodicalIF":2.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141575770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silicone-containing polyurea elastomer possessing main-chain boron–oxygen bonds with delayed stress relaxation and improved adhesive properties 含硅聚脲弹性体具有主链硼氧键，可延迟应力松弛并改善粘合性能

IF 2.9 4区化学

Polymer International Pub Date : 2024-06-21 DOI: 10.1002/pi.6671

Shilong Zhang, Youhao Xiong, Yangwei Wang, Yuqi Ma, Jialiang Li, Chaobo Jiang, Ce Wang, Yanling Zhu, Yongsheng Zhao, Guangcheng Zhang

{"title":"Silicone-containing polyurea elastomer possessing main-chain boron–oxygen bonds with delayed stress relaxation and improved adhesive properties","authors":"Shilong Zhang, Youhao Xiong, Yangwei Wang, Yuqi Ma, Jialiang Li, Chaobo Jiang, Ce Wang, Yanling Zhu, Yongsheng Zhao, Guangcheng Zhang","doi":"10.1002/pi.6671","DOIUrl":"10.1002/pi.6671","url":null,"abstract":"Polyurea (PU) elastomers have attracted considerable attention in the field of protective polymeric coatings. In this work, a dithiol-terminated boronic ester was synthesized and used to incorporate dynamic boron–oxygen (B–O) bonds in the PU main chain based on thiol isocyanate while amino-terminated polydimethylsiloxane (PDMS) was introduced to retain good chain flexibility. The modified PU elastomer was found to have a microphase-separated structure in which the hard blocks served as physical crosslinks. The glass transition temperature (Tg) slightly increases when dynamic B–O bonds exist while further introduction of PDMS soft segment can lower Tg to −55.63 °C. The introduction of dynamic B–O bonds and diminished hydrogen bonding led to a decrease in mechanical strength and elongation at break. Interestingly, the simultaneous incorporation of PDMS and dynamic B–O bonds is favorable for strain rate dependence and suppressing stress relaxation. The potential for bond-exchange interactions between the dynamic B–O bonds and hydroxyl groups on metal surfaces substantially improved the adhesion of the PU elastomer to metal substrates. Therefore, our work can offer valuable insights for the structural design of functional PU coatings tailored for anti-impact applications. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 10","pages":"874-882"},"PeriodicalIF":2.9,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141551322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quercetin allylation and thiol–ene click photopolymerization to produce biobased polymer thermosets with robust thermomechanical properties 利用槲皮素烯丙基化和硫醇烯点击光聚合技术生产具有强热力学性能的生物基聚合物热固性塑料

IF 2.9 4区化学

Polymer International Pub Date : 2024-06-18 DOI: 10.1002/pi.6670

Víctor D Lechuga Islas, Ricardo Acosta Ortiz, Roberto Yañez Macías, Alan I Hernández Jiménez

{"title":"Quercetin allylation and thiol–ene click photopolymerization to produce biobased polymer thermosets with robust thermomechanical properties","authors":"Víctor D Lechuga Islas, Ricardo Acosta Ortiz, Roberto Yañez Macías, Alan I Hernández Jiménez","doi":"10.1002/pi.6670","DOIUrl":"https://doi.org/10.1002/pi.6670","url":null,"abstract":"The development of biobased and functionalized monomers along with eco-friendly photopolymerization processes represent promising methods for the development of renewable and more environmentally friendly thermosets. Thiol–ene ‘click’ photopolymerization is particularly advantageous in this regard; however, the materials derived from this method often exhibit low glass transition temperatures (Tg) and unsuitable thermomechanical properties for applications at room temperature. Herein, we report the synthesis of biobased allyl derivatives from quercetin, a renewable flavonoid compound widely available in fruits, vegetables and plants. We demonstrated the isolation of tetra- and penta-allylated quercetin (Q1 and Q2, respectively) and their subsequent photoactivated thiol–ene polymerization. By introducing a biobased thiol curing agent (PTTMP) derived from glycerol and mercaptopropionic acid, we produced fully biobased crosslinked thermosets with high content of aromatic moieties provided by the framework of the monomers. Real-time infrared spectroscopy showed the effective thiol–ene photopolymerization of Q1 and Q2 and PTTMP with conversions of 60% and 75%, respectively, after 15 min of UV irradiation. Due to the modulated crosslinking degree from the allyl group functionalization in the monomers, the biobased crosslinked networks showed storage moduli from 420 to 739 MPa, thermal stability from 220 to 257 °C and Tg values ranging from 75 to 90 °C. This work outlines straightforward strategies for creating biobased thermosets that overcome the limited thermomechanical properties of thiol–ene networks and offer potential antimicrobial and antioxidant properties. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 10","pages":"864-873"},"PeriodicalIF":2.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cardiomyocyte differentiation of umbilical cord mesenchymal stem cells on poly(mannitol sebacate)/multi-walled carbon nanotube substrate 聚(甘露醇癸二酸酯)/多壁碳纳米管基底上的脐带间充质干细胞的心肌细胞分化

IF 2.9 4区化学

Polymer International Pub Date : 2024-06-14 DOI: 10.1002/pi.6668

Elham Hosseinzadeh, Faraz Sigaroodi, Camellia Ganjoury, Azim Parandakh, Najmeh Najmoddin, Shayan Shahriari, Maryam Mahmoodinia Maymand, Mohammad-Mehdi Khani

{"title":"Cardiomyocyte differentiation of umbilical cord mesenchymal stem cells on poly(mannitol sebacate)/multi-walled carbon nanotube substrate","authors":"Elham Hosseinzadeh, Faraz Sigaroodi, Camellia Ganjoury, Azim Parandakh, Najmeh Najmoddin, Shayan Shahriari, Maryam Mahmoodinia Maymand, Mohammad-Mehdi Khani","doi":"10.1002/pi.6668","DOIUrl":"10.1002/pi.6668","url":null,"abstract":"Myocardial infarction is one of the main causes of death worldwide. After myocardial infarction, the damaged area is typically occupied with non-contractile scar tissue owing to the limited ability of cardiac cells to proliferate. Cardiac patches can potentially restore heart function by providing sufficient electrochemical properties to the damaged area and supporting the differentiation into and proliferation of cardiac cells. In this study, we developed for the first time a poly(mannitol sebacate) (PMS) based scaffold combined with 1% (w/w)multi-walled carbon nanotubes (MWCNTs) to produce a biocompatible cardiac patch by the solvent casting method. We characterized the resultant PMS-MWCNT scaffold in terms of chemical, physical, mechanical and electrical properties. The PMS/MWCNT patch revealed appropriate hydrophilicity, elasticity close to that of the target tissue, and electrical conductivity suited for a cardiac patch. The cytocompatibility of the composite was confirmed by the successful attachment and proliferation of human umbilical cord mesenchymal stem cells (HUC-MSCs). The PMS/MWCNTs further contributed to the differentiation of HUC-MSCs by significant overexpression of cardiac-specific proteins, i.e. troponin T and connexin 43, in the presence of 5-azacytidine. The findings of this study could be of assistance in the use and development of PMS-based composites as cardiac patches for myocardial tissue engineering applications. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 10","pages":"844-851"},"PeriodicalIF":2.9,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141343146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ alkali-free growth of octahedral Ag2O nanoparticles by bacterial cellulose for efficient antibacterial application 细菌纤维素原位无碱生长八面体 Ag2O 纳米粒子，实现高效抗菌应用

IF 2.9 4区化学

Polymer International Pub Date : 2024-06-12 DOI: 10.1002/pi.6666

Man Zhou, Youfeng Cui, Qin Feng, Wangcheng Wu, Yanli Zhou, Song Xu, Hao Ma, Liwei Lin, Zhongyu Li

{"title":"In situ alkali-free growth of octahedral Ag2O nanoparticles by bacterial cellulose for efficient antibacterial application","authors":"Man Zhou, Youfeng Cui, Qin Feng, Wangcheng Wu, Yanli Zhou, Song Xu, Hao Ma, Liwei Lin, Zhongyu Li","doi":"10.1002/pi.6666","DOIUrl":"10.1002/pi.6666","url":null,"abstract":"Uniform octahedral Ag2O nanoparticles were in situ synthesized within natural bacterial cellulose (BC) films without any inorganic alkali. The morphological transformation of Ag2O from nanoparticles and small nanoplates to an octahedral structure was well controlled by varying the UV exposure time. To reduce and anchor Ag2O nanoparticles, abundant hydroxyl groups on the surface of natural BC fibers ensured an ideal environment for the mild redox reaction between Ag+ and –OH groups. The structural features and structure–activity relationship of Ag2O/BC films were confirmed through TEM, energy dispersive spectroscopy assisted SEM analysis, Fourier transform IR, X-ray photoelectron spectroscopy, TGA and XRD. The structure–antibacterial activity relationship of the Ag2O/BC films was proved against both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. They also showed excellent performance in the photocatalytic degradation of organic dyes. Ag2O/BC films have potential bactericidal applications in the field of pharmacy, specifically for wound dressing and flexible wearable materials. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"74 1","pages":"37-45"},"PeriodicalIF":2.9,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141351176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature effect on tension formation in styrene–divinylbenzene copolymers 温度对苯乙烯-二乙烯基苯共聚物张力形成的影响

IF 2.9 4区化学

Polymer International Pub Date : 2024-06-07 DOI: 10.1002/pi.6669

Alexey V Bykov, Galina N Demidenko, Antonina A Stepacheva, Mariia E Markova

{"title":"Temperature effect on tension formation in styrene–divinylbenzene copolymers","authors":"Alexey V Bykov, Galina N Demidenko, Antonina A Stepacheva, Mariia E Markova","doi":"10.1002/pi.6669","DOIUrl":"10.1002/pi.6669","url":null,"abstract":"Crosslinked polymers are considered to be promising materials for supporting catalysts that are effectively applied in different reactions. However, the application of polymer-supported catalysts in high-temperature processes is limited by their temperature stability. Besides thermal degradation, temperature changes can cause the restructuring of the polymer network because of changes in the valence angles and bond lengths. Thus, the study of the influence of temperature on the structure of crosslinked styrene–divinylbenzene (StDVB) copolymers is an important task. In this work, for the first time, the temperature effect limitations on StDVB copolymers are studied and justified. The changes in the polymer structure tension as well as in the specific surface area are studied using molecular dynamics simulation in the temperature range 77–723 K. Near-cryogenic temperatures are not found to affect significantly the specific surface area. The heating of the polymer up to the temperature used for the reduction of catalysts (573 K) is shown to decrease the specific surface area by 11% because of an increase in the bond tension and valence angle deformation. Further increase in temperature leads to polymer decomposition. The results obtained can be considered for taking into account when applying polymer-supported catalysts. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 10","pages":"852-863"},"PeriodicalIF":2.9,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141375395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable biomaterials for tissue engineering: electrospun polycaprolactone fibers enriched with freshwater snail calcium carbonate and waste human hair keratin 用于组织工程的可持续生物材料：富含淡水蜗牛碳酸钙和废人类头发角蛋白的电纺聚己内酯纤维

IF 2.9 4区化学

Polymer International Pub Date : 2024-06-03 DOI: 10.1002/pi.6667

Özge Erdemli, Bengi Yilmaz, İrem Göksu Saran, Erdal Serin

{"title":"Sustainable biomaterials for tissue engineering: electrospun polycaprolactone fibers enriched with freshwater snail calcium carbonate and waste human hair keratin","authors":"Özge Erdemli, Bengi Yilmaz, İrem Göksu Saran, Erdal Serin","doi":"10.1002/pi.6667","DOIUrl":"10.1002/pi.6667","url":null,"abstract":"This study focuses on developing a sustainable and biocompatible polycaprolactone (PCL)-based scaffold for bone tissue engineering through electrospinning, utilizing calcium carbonate (CaCO3) from Pomacea canaliculata shells and keratin from human hair, known for stimulating bone regeneration. The isolated CaCO3 has been identified to demonstrate two polymorphs, vaterite and calcite, as determined by X-ray diffraction. The isolation of keratin from human hair was confirmed through sodium dodecyl sulfate polyacrylamide gel electrophoresis and Fourier transform infrared spectroscopy analysis, revealing the presence of α-keratin structures around 45–50 kDa and β-keratin structures around 55–60 kDa. According to scanning electron microscope observations, the addition of keratin to PCL fibers reduced their diameter from 457 ± 345 to 371 ± 103 nm. Further addition of calcium carbonate led to a mean diameter of 258 ± 76 nm. The melting temperature of PCL fibers containing keratin and CaCO3 was determined to be 76.17 °C via differential scanning calorimetry, while thermogravimetric analysis, conducted at temperatures up to 600 °C, revealed a remaining ash content of 9.59%. Calcium phosphate accumulation was observed to initiate on PCL fibers containing keratin and CaCO3 following a 7-day exposure to simulated body fluid. The fibers exhibit cytocompatibility, showing no toxicity while supporting the growth and proliferation of Saos-2 osteosarcoma cells. The results suggest that the innovative incorporation of keratin and CaCO3 into PCL nanofibers could serve as a bioactive matrix compared to pure PCL matrices, thereby offering enhanced potential for bone tissue engineering applications. © 2024 The Author(s). Polymer International published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 10","pages":"833-843"},"PeriodicalIF":2.9,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pi.6667","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141270499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical and biodegradation analysis under various environmental conditions of the waste vetiver root fiber reinforced soy composite 废弃香根草根部纤维增强大豆复合材料在不同环境条件下的力学和生物降解分析

IF 3.2 4区化学

Polymer International Pub Date : 2024-05-25 DOI: 10.1002/pi.6664

Shruti Swaroop Pattnaik, Diptiranjan Behera, Pallavi Jali, Ajaya Kumar Behera

{"title":"Mechanical and biodegradation analysis under various environmental conditions of the waste vetiver root fiber reinforced soy composite","authors":"Shruti Swaroop Pattnaik, Diptiranjan Behera, Pallavi Jali, Ajaya Kumar Behera","doi":"10.1002/pi.6664","DOIUrl":"https://doi.org/10.1002/pi.6664","url":null,"abstract":"To address the difficulty posed by non‐biodegradable thermoplastics, scientists are focusing on solid waste management research. Waste vetiver root fibers reinforced in polymerized soy matrix biomass composites were fabricated and tested for biodegradability and sustainability in different natural decomposing conditions like seawater aging and fungal and termite attacks. This study reports and compares the dimensional changes caused by these attacks, as well as the moisture absorption of vetiver‐soy and alkali‐treated vetiver‐soy composites at different relative humidity. After‐degradation characterizations included Fourier transform infrared spectroscopy and SEM examinations, as well as weight loss, which gave additional insights into the degradation mechanism. The tensile strength of degraded samples decreased as the degradation duration increased. Mechanical properties like Izod impact strength, dynamic mechanical analysis and moisture absorption also provided insights into the structural firmness of the fabricated composite. This research contributes to a better knowledge of the bio‐deterioration process of cellulosic vetiver‐soy biocomposites under various situations, and to check their functionality in furniture and packaging industries. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"55 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141151923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-step heating strategy during thermal stabilization of polyacrylonitrile multi-filament bundle before carbonization 聚丙烯腈多丝束碳化前热稳定过程中的多步加热策略

IF 2.9 4区化学

Polymer International Pub Date : 2024-05-24 DOI: 10.1002/pi.6665

Hiba Hariri, Kemal Şahin Tunçel, Ismail Karacan

{"title":"Multi-step heating strategy during thermal stabilization of polyacrylonitrile multi-filament bundle before carbonization","authors":"Hiba Hariri, Kemal Şahin Tunçel, Ismail Karacan","doi":"10.1002/pi.6665","DOIUrl":"10.1002/pi.6665","url":null,"abstract":"A polyacrylonitrile (PAN) multi-filament bundle underwent a multi-step heat treatment following impregnation with a solution of ammonium bromide, phosphoric acid and urea (A-P-U). The multi-step thermal stabilization process was conducted in an air atmosphere at temperatures ranging from 200 to 245 °C for various stabilization times spanning from 10 to 70 min. Comprehensive analysis of physical and mechanical properties, infrared (IR) spectroscopy, X-ray diffraction (XRD) and thermal analysis (DSC and TGA) revealed the significant influence of stabilization time on the structure and properties of thermally stabilized PAN multi-filament bundle. The fiber thickness and linear density of the stabilized fibers decreased by approximately 29.5% and 10.6%, respectively, after 70 min of heat treatment. However, the fiber density value increased from 1.18 to 1.38 g cm−3 during the same stabilization time. Additionally, the carbon yield value obtained using TGA increased from 31% to 73% at 850 °C. The presence of A-P-U markedly reduced the time needed for the conversion of the PAN polymer into a cyclized structure through its nitrile groups, thereby accelerating the stabilization reactions. Furthermore, the IR spectra exhibited the appearance of CC bonds, signaling the creation of a crosslinked ladder-like structure. The XRD traces confirmed the decrease in crystallinity with increasing stabilization time, consistent with the findings from IR spectra. The findings showed that the A-P-U integrated system is notably successful and proficient in promoting the cyclization of nitrile groups, thereby decreasing the time needed to establish a thermally stable structure capable of withstanding elevated carbonization temperatures. © 2024 The Author(s). Polymer International published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 10","pages":"824-832"},"PeriodicalIF":2.9,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pi.6665","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141101019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermo-mechanical properties of epoxy composites filled with inorganic particulate fillers for robust solder mask application 填充了无机微粒填料的环氧树脂复合材料的热机械性能，用于焊接掩模的稳固应用

IF 2.9 4区化学

Polymer International Pub Date : 2024-05-20 DOI: 10.1002/pi.6648

William Yung Ling Lim, Mariatti Jaafar, Ku Marsilla Ku Ishak, Karuna Chinniah, Wooi Keong Chan

{"title":"Thermo-mechanical properties of epoxy composites filled with inorganic particulate fillers for robust solder mask application","authors":"William Yung Ling Lim, Mariatti Jaafar, Ku Marsilla Ku Ishak, Karuna Chinniah, Wooi Keong Chan","doi":"10.1002/pi.6648","DOIUrl":"10.1002/pi.6648","url":null,"abstract":"Filler components play a crucial role as thermo-mechanical reinforcement to the epoxy-based solder mask, ensuring effective insulation and passivation. This study investigates the impact of different inorganic filler types (talc, silica (SiO2), boron nitride (BN) and barium sulfate (BaSO4)) and loadings (5 and 15 wt%) on the tensile and thermal properties of the epoxy composites. The composites were blended, cast and thermally cured. Of these composites, only 15 wt% SiO2/epoxy composite exhibits notable increments in both tensile strength and modulus, surpassing unfilled epoxy by 11.65% and 31.9%, respectively. It also displays the highest elongation at break, supported by small particle size, high specific surface area and minimal void volume fraction. For thermal tests, the addition of all fillers increases the storage modulus in both glassy and rubbery regions, especially 15 wt% talc/epoxy composite with 30.09% increment at 25 °C. Additionally, all fillers raise the glass transition temperature (Tg), notably improving it by 9 °C in the 15 wt% BN/epoxy composite. Moreover, their inclusion generally enhances the onset decomposition temperature (Tonset) and reduces weight loss during decomposition. © 2024 Society of Chemical Industry.","PeriodicalId":20404,"journal":{"name":"Polymer International","volume":"73 9","pages":"779-788"},"PeriodicalIF":2.9,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141119974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0