European Polymer Journal最新文献_第8页

A strategy to prepare high Tg and low CTE solder resist using alkali-soluble photosensitive polyimide 使用碱溶性光敏聚酰亚胺制备高 Tg 和低 CTE 阻焊层的策略

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-24 DOI: 10.1016/j.eurpolymj.2024.113508

Xingwang Lai , Shan Huang , Jialin Zhang , Xialei Lv , Fangfang Niu , Jinhui Li

{"title":"A strategy to prepare high Tg and low CTE solder resist using alkali-soluble photosensitive polyimide","authors":"Xingwang Lai , Shan Huang , Jialin Zhang , Xialei Lv , Fangfang Niu , Jinhui Li","doi":"10.1016/j.eurpolymj.2024.113508","DOIUrl":"10.1016/j.eurpolymj.2024.113508","url":null,"abstract":"<div><div>Photosensitive Solder resist (SR) materials require a high glass transition temperature (<em>T</em><sub>g</sub> > 170 °C) and a coefficient of thermal expansion matching that of copper (CTE≈17 ppm/°C) to meet the demands of manufacturing processes and application reliability. However, the commonly used epoxy resin in SR materials exhibits insufficient mechanical and thermal properties, failing to meet these requirements adequately. To address this issue, alkali-soluble photosensitive poly (amic ester) (PAE) materials were synthesized. By grafting a low-temperature curing accelerator, 6-([1,1′-biphenyl]–4-yl)–4-chloroquinoline (NQL), onto the hydroxyl groups of the PAE, the resultant grafted PAE resin was blended with an alkali-soluble photosensitive modified epoxy resin (APE) to enhance the mechanical and thermal properties of the SR composite. Research indicates that due to the low-temperature curing effect and electrostatic interactions of NQL, SR-2 (with a 10% PAE addition) exhibits a <em>T</em><sub>g</sub> of 183 °C and a CTE of 16 ppm/°C, while SR-3 (with a 30% PAE addition) achieves a <em>T</em><sub>g</sub> of 204 °C and a CTE of 20 ppm/°C. Furthermore, with the PAE addition of 5%, the lithography quality of SR is enhanced, enabling SR-1 to achieve a pattern resolution of up to 40 μm. The modification method involving PSPI blending has been shown to enhance the thermal stability, dimensional stability, and lithographic performance of SR, indicating significant potential applications in solder resist materials.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113508"},"PeriodicalIF":5.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

One-pot preparation of strong, tough, frost-resistant and recyclable organohydrogels via Hofmeister effect and its application for electronic devices 通过霍夫迈斯特效应一锅制备强韧、抗冻和可回收的有机水凝胶及其在电子设备中的应用

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-24 DOI: 10.1016/j.eurpolymj.2024.113529

Mingqiang Hu , Yingxue Deng , Xing Qian , Dezhan Ye , Xiancai Jiang , Gao Xiao

{"title":"One-pot preparation of strong, tough, frost-resistant and recyclable organohydrogels via Hofmeister effect and its application for electronic devices","authors":"Mingqiang Hu , Yingxue Deng , Xing Qian , Dezhan Ye , Xiancai Jiang , Gao Xiao","doi":"10.1016/j.eurpolymj.2024.113529","DOIUrl":"10.1016/j.eurpolymj.2024.113529","url":null,"abstract":"<div><div>Conductive hydrogels have shown a great potential in the field of flexible electronics. However, it is difficult to combine high strength and high toughness in conductive hydrogels prepared by conventional methods, which limits their applications in various fields. In this work, we pioneered a facile and cost-effective strategy to prepare soy protein isolate/poly(vinyl alcohol) (SPI/PVA) conductive hydrogels with high strength, toughness, low-temperature resistance, and recyclability by introducing all the salts into the prescuor solution directly. To solve the problem of unable to directly introducing high concentration Na<sub>3</sub>Cit into the soy protein isolate/PVA solution, MgCl<sub>2</sub> was used to alleviate the strong salting-out effect of Na<sub>3</sub>Cit. Thus the stable SPI/PVA/EG/MgCl<sub>2</sub>/Na<sub>3</sub>Cit complex solution was obtained and the SPI/PVA/EG/MgCl<sub>2</sub>/Na<sub>3</sub>Cit (SPEMS) organohydrogel was prepared by the freezing/thawing process. The optimum tensile strength of the SPEMS organohydrogel was 1.1±0.07 MPa, and the elongation at break was 701.3±23.67 %, respectively. Meanwhile, the ionic conductivity of the organohydrogel was as high as 1.7±0.01 S/m. Finally, the EG/H<sub>2</sub>O binary solvent system endowed the organohydrogel with excellent low-temperature resistance (freezing point of −19.4 °C). The strain sensors assembled with SPEMS organohydrogels were characterized by high sensitivity (<em>GF</em> = 3.2, strain range from 20 %–500 %) and long-term stability. The flexible all-solid-state supercapacitor assembled with SPEMS organohydrogel as the electrolyte and activated carbon as the electrodes has a high area specific capacitance (113.76 mF/cm<sup>2</sup>) and good cycling stability (capacitance retention of 81.62 % after 1,000 charging and discharging cycles) at room temperature.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113529"},"PeriodicalIF":5.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synthesis and evaluation of bio-based Poly(oxime-urethane) with intrinsic antimicrobial properties 具有内在抗菌特性的生物基聚（肟-聚氨酯）的合成与评估

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-22 DOI: 10.1016/j.eurpolymj.2024.113514

Guan Yang , Guangming Lu , Sisi Dai , Shu Tian , Zhongsen Ma , Yajie Zhang

{"title":"Synthesis and evaluation of bio-based Poly(oxime-urethane) with intrinsic antimicrobial properties","authors":"Guan Yang , Guangming Lu , Sisi Dai , Shu Tian , Zhongsen Ma , Yajie Zhang","doi":"10.1016/j.eurpolymj.2024.113514","DOIUrl":"10.1016/j.eurpolymj.2024.113514","url":null,"abstract":"<div><div>Intrinsic antimicrobial properties can give polyurethanes a wider range of applications. In this work, the bio-based chain extender, 2,5-diformylfuran dioxime (DFFD) possessing antimicrobial characteristic, is used to synthesize the intrinsical antimicrobial poly(oxime-urethane) (Dx-PU) with isophorone diisocyanate (IPDI) and poly(tetramethylene glycol) (PTMG-1000), and its properties are investigated. The results show that the tensile strength is 19.12 ± 0.49 MPa, the Young’s modulus of the poly(oxime-urethane) is 118.70 ± 11.40 MPa. The elongation at break and Shore A hardness were 292 ± 11 % and 93 ± 2, respectively. Additionally, the Dx-PU demonstrated a high thermal decomposition temperature of over 250 °C and a low glass transition temperature of the soft segments at approximately −60 °C. Meanwhile, research on Dx-PU coating has demonstrated that Dx-PU coating is 100 % antimicrobial against <em>E. coli</em> and <em>S. aureus</em>, and is suitable for use on a wide range of substrates, including glass, engineering plastics, metal and leather with excellent adhesion (ISO 0), pencil hardness (2H), impact resistance (0.5 m·kg) and flexibility (2 mm). The Dx-PU coating also has significant antibacterial performance in everyday environments. The outstanding flexibility, moderate Young’s modulus, high elongation at break, good thermal resistance, and excellent antimicrobial performance of Dx-PU make it highly suitable for applications on high-contact surfaces such as hospital walls, public sanitation facilities, countertops, and door handles. As a bio-based chain extender from renewable sources, DFFD offers new solutions for the synthesis of bio-based antimicrobial polyurethane and its coatings.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113514"},"PeriodicalIF":5.8,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 recovery of monomers from PET and PC waste via Thermocatalytic depolymerization for synthesis of polycarbonates and co-polycarbonates 通过热催化解聚从 PET 和 PC 废弃物中可持续回收单体，用于合成聚碳酸酯和共聚碳酸酯

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-22 DOI: 10.1016/j.eurpolymj.2024.113516

Loganathan M , Rajendraprasad M , A. Murugesan , Ju Yi Lee , Kiran B Manjappa

{"title":"Sustainable recovery of monomers from PET and PC waste via Thermocatalytic depolymerization for synthesis of polycarbonates and co-polycarbonates","authors":"Loganathan M , Rajendraprasad M , A. Murugesan , Ju Yi Lee , Kiran B Manjappa","doi":"10.1016/j.eurpolymj.2024.113516","DOIUrl":"10.1016/j.eurpolymj.2024.113516","url":null,"abstract":"<div><div>The increasing global demand for sustainable plastics recycling methods has propelled the research and development of innovative depolymerization processes. The Thermocatalytic depolymerization (TCDP) of polyethylene terephthalate (PET) and polycarbonate (PC) has been performed at 200 ℃. Ethylene glycol (EG) is used as a reactant and as well a polymer bond-cleaving agent and Yttrium Oxide (Y<sub>2</sub>O<sub>3</sub>) is used as an effective catalyst. Y<sub>2</sub>O<sub>3</sub> acted as a dual role during depolymerization reaction, which converts EG into cyclic ethylene oxide (CEO) and as well as to break the ester and carbonate bonds in the polymer structure of PET and PC respectively. The TCDP reaction conditions were optimized and the maximum quantity of Bis(2-hydroxyethyl) terephthalate (BHET) (80%) and (Bisphenol A (BPA)) (83%) has been recovered by TCDP reaction of PET and PC respectively. The polycarbonate and co-polycarbonate (Co-PC) were synthesized using recovered BPA and BHET with triphosgene via polycondensation reaction. The structure of monomers and polymers was confirmed by existing analytical (FTIR, NMR, XRD and GPC) techniques. The thermal properties of PC and Co-PC were performed by TG analysis. The TGA results reveal that the degradation temperature (T<sub>d</sub>) of PC and Co-PC are observed at 420.5 and 442.8 °C respectively, which shows that the T<sub>d</sub> of Co-PC has been increased by 22 ℃ than PC. The TCDP process is an effective method to recover specific value-added products from waste plastics, which could be made into a new versatile material for different applications. This research finding will provide a new direction to convert plastic waste into useful chemicals, which could reduce waste plastic and their carbon footprint and contribute to a more sustainable future by reusing plastic materials and achieving a circular economy.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113516"},"PeriodicalIF":5.8,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Water-based synthesis of dextran-methacrylate and its use to design hydrogels for biomedical applications 葡聚糖-甲基丙烯酸酯的水基合成及其用于设计生物医学应用的水凝胶

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-22 DOI: 10.1016/j.eurpolymj.2024.113515

Bastien Darmau , Antoine Hoang , Andrew J. Gross , Isabelle Texier

{"title":"Water-based synthesis of dextran-methacrylate and its use to design hydrogels for biomedical applications","authors":"Bastien Darmau , Antoine Hoang , Andrew J. Gross , Isabelle Texier","doi":"10.1016/j.eurpolymj.2024.113515","DOIUrl":"10.1016/j.eurpolymj.2024.113515","url":null,"abstract":"<div><div>Polysaccharide-based hydrogels are desirable for biomedical applications owing to their biocompatibility and physicochemical tunability. The chemical modification of polysaccharides with photo-sensitive groups, such as methacrylates is a common method to obtain new hydrogel materials. This study introduces a non-toxic water-based method to effectively functionalize dextran with methacrylate groups. The methacrylation reaction with methacrylic anhydride in water in the presence of NaOH was rapid and efficient (85 %−92 % yield), permitting degrees of substitution (DS) up to 62 % within 60 min. An unconventional solid-state photo-crosslinking method was employed to form chemically crosslinked dextran-based hydrogels with LAP (lithium phenyl-2,4,6-trimethylbenzoylphosphinate) as the photoinitiator. By varying the polymer formulations (DS, polymer mass, LAP concentration), a wide range of hydrogels were obtained with various swelling ratios (40–250 %) and release kinetics of model drug and protein biomolecules. Compression modulus values ranged from 32 ± 1 to 342 ± 10 MPa (dry state) and 87 to 8500 kPa (swollen state). Cytotoxicity experiments indicated good biocompatibility for the crosslinked dextran hydrogels. The green synthesis protocols and obtained dextran-based hydrogels with high mechanical strength open up perspectives for applications from tissue engineering to the design of medical devices such as microneedles.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113515"},"PeriodicalIF":5.8,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synthesis of low-entangled UHMWiPP using Hf-pyridyl amido catalyst activated by trityl tetrakis (pentafluorophenyl) borate 使用由四(五氟苯基)硼酸三甲苯酯活化的 Hf 吡啶氨基催化剂合成低缠结超高分子量聚丙烯 (UHMWiPP)

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-20 DOI: 10.1016/j.eurpolymj.2024.113513

Abdulaziz Alsubhi , Dario Romano , Fuhai Zhou , Sanjay Rastogi

{"title":"Synthesis of low-entangled UHMWiPP using Hf-pyridyl amido catalyst activated by trityl tetrakis (pentafluorophenyl) borate","authors":"Abdulaziz Alsubhi , Dario Romano , Fuhai Zhou , Sanjay Rastogi","doi":"10.1016/j.eurpolymj.2024.113513","DOIUrl":"10.1016/j.eurpolymj.2024.113513","url":null,"abstract":"<div><div>Recently we demonstrated that low entangled ultra-high molecular weight <em>isotactic</em> polypropylene having molecular weight up to 2.4 million g/mol can be synthesized using a Hf-pyridyl amido catalyst activated by dimethylanilinium tetrakis (pentafluorophenyl)borate. Herein, we used an aprotic borate (trityl tetrakis(pentafluorophenyl)borate) to activate a Hf-pyridyl amido catalyst leading to a fast and ease catalyst activation even at lower temperatures, thus yielding exceptionally high molecular weight (up to 7.7 million g/mol) having improved tacticity (<em>mmmm</em> up to 98.5 %) and peak melting temperature (up to 165 °C). Thus synthesized polymers show extremely slow equilibration process by rheological characterization, indicating the low entangled state. These polymers can be processed in solid-state, without melting, into uniaxial drawn tapes having high tensile strength (1.46 N/tex) and tensile modulus (33 N/tex). The superior mechanical properties enable the tapes to be used as reinforcing material for commercial polypropylene grades, opening the possibilities of making one-component easy-to-recycle composites.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113513"},"PeriodicalIF":5.8,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Integration of two-dimensional MXene into polymeric-based nanocomposite hydrogels for various biomedical applications: Recent advances and future prospects 将二维 MXene 融入聚合物基纳米复合水凝胶，用于各种生物医学应用：最新进展与未来展望

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-20 DOI: 10.1016/j.eurpolymj.2024.113512

Khurram Shahzad , Muhammad Asim Raza , Abrar Hussain , Shiv Dutt Purohit , Kyong-Cheol Ko , Sung Soo Han , Sang Hyun Park

引用次数: 0

pH-induced morphological reversible transition from microparticles to vesicles for effective bacteria entrapment pH 值诱导微粒向囊泡的形态可逆转变，从而有效地截留细菌

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-19 DOI: 10.1016/j.eurpolymj.2024.113511

Vladimir Sincari , Svetlana Lukáš Petrova , Eliézer Jäger , Alessandro Jäger , Rafał Konefał , Veronika Gajdošová , Miroslav Šlouf , Hympánová Michaela , Jan Marek , Ondrej Soukup , Martin Hrubý

{"title":"pH-induced morphological reversible transition from microparticles to vesicles for effective bacteria entrapment","authors":"Vladimir Sincari , Svetlana Lukáš Petrova , Eliézer Jäger , Alessandro Jäger , Rafał Konefał , Veronika Gajdošová , Miroslav Šlouf , Hympánová Michaela , Jan Marek , Ondrej Soukup , Martin Hrubý","doi":"10.1016/j.eurpolymj.2024.113511","DOIUrl":"10.1016/j.eurpolymj.2024.113511","url":null,"abstract":"<div><div>Polymer particles with stimuli-responsive properties offer promising applications in healthcare, chemical reactors, development of artificial cells and organelles, as well as in the entrapment of bacteria. In this study, a novel biocompatible, biodegradable, and pH-responsive diblock copolymer based on polylactide (PLA) and poly(2-(diisopropylamino)ethyl methacrylate) (PDPA) was synthesized <em>via</em> a metal-free one-pot/simultaneous ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT) approach (ROP/RAFT). This copolymer was then employed to produce highly monodisperse microparticles using microfluidics droplet generation technique. Utilizing confocal microscopy imaging, a reversible pH-induced morphological transition from microparticles to vesicle-like structures was observed at pH 5.1. The reversible shift in morphology from microparticles to giant vesicles (Vs) in acidic environments is triggered by the protonation of amino groups of the PDPA block, rendering vesicle surfaces positively charged − an advantageous feature for attracting and engulfing negatively charged bacteria. Initial validation involved electrostatic interactions with negatively charged latex resin beads followed by assessing interaction capabilities with gram-negative bacteria, <em>Escherichia coli (E. coli)</em>. Additionally, the reversible morphological transition of microparticles-to-vesicles was employed to study drug release at different pHs. This approach proven to be a promising strategy for targeted drug delivery and bacteria entrapment using smart pH-responsive microparticles.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113511"},"PeriodicalIF":5.8,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Development and 4D printing of magneto-responsive PMMA/TPU/Fe3O4 nanocomposites with superior shape memory and toughness properties 具有优异形状记忆和韧性特性的磁响应 PMMA/TPU/Fe3O4 纳米复合材料的开发与 4D 印刷

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-19 DOI: 10.1016/j.eurpolymj.2024.113495

Afshin Ahangari , Hossein Doostmohammadi , Majid Baniassadi , Mahdi Bodaghi , Mostafa Baghani

{"title":"Development and 4D printing of magneto-responsive PMMA/TPU/Fe3O4 nanocomposites with superior shape memory and toughness properties","authors":"Afshin Ahangari , Hossein Doostmohammadi , Majid Baniassadi , Mahdi Bodaghi , Mostafa Baghani","doi":"10.1016/j.eurpolymj.2024.113495","DOIUrl":"10.1016/j.eurpolymj.2024.113495","url":null,"abstract":"<div><div>This paper introduces 4D printing of composites of polymethyl methacrylate (PMMA) and thermoplastic polyurethane (TPU) reinforced with Fe<sub>3</sub>O<sub>4</sub> particles for the first time. PMMA/TPU blends with 70/30 wt% are selected as matrix with the best compatibility based on dynamic mechanical thermal analysis. Fe<sub>3</sub>O<sub>4</sub> nanoparticles are added to the blends with 10 %, 15 % and 20 % weight ratios. Their addition enables remote actuation of the materials in a high frequency alternating magnetic field. Field emission scanning microscopic images confirms a full dispersion of nanoparticles inside the polymeric matrix. Nanocomposites with 20 wt% of Fe<sub>3</sub>O<sub>4</sub> can perfectly recover the permanent shape within 1.5 min in the magnetic field. They also reveal perfect shape memory properties in the hot water. Moreover, all samples display a perfect shape fixity ratio. The addition of TPU significantly enhances the toughness and flexibility of the PMMA matrix. It is found that Fe<sub>3</sub>O<sub>4</sub> nanoparticles further enhance the mechanical strength by 10 % to 15 %, although they reduce the strain at break from 17 % to 14 %. Finally, a gripper is 4D printed and its excellent performance in the magnetic field is demonstrated.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"220 ","pages":"Article 113495"},"PeriodicalIF":5.8,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The influence of myrcene on anionic copolymerization of 1,3-pentadiene and styrene 月桂烯对 1,3-戊二烯和苯乙烯阴离子共聚的影响

IF 5.8 2区化学

European Polymer Journal Pub Date : 2024-10-16 DOI: 10.1016/j.eurpolymj.2024.113507

Yawen Fu , Qiqi Dai , Haoyun Tan , Xupeng Han , Bingbing Zhang , Qiaoqiao Xiong , Wenjun Yi , Zan Yang , Lijun Li , Kun Liu

{"title":"The influence of myrcene on anionic copolymerization of 1,3-pentadiene and styrene","authors":"Yawen Fu , Qiqi Dai , Haoyun Tan , Xupeng Han , Bingbing Zhang , Qiaoqiao Xiong , Wenjun Yi , Zan Yang , Lijun Li , Kun Liu","doi":"10.1016/j.eurpolymj.2024.113507","DOIUrl":"10.1016/j.eurpolymj.2024.113507","url":null,"abstract":"<div><div>C5-dienes including 1,3-pentadiene (PD) and isoprene (IP) as by-products of naphtha cracking are important industrial raw materials for the production of thermoplastic elastomers, synthetic rubber and resins. The research on living anionic polymerization (LAP) of myrcene (MY) is also of great significance for the development of new bio-based materials and products. Focusing on the optimal utilization of C5 resources and the high-value utilization of biomass resources and the realization of green chemical production, this article reports the synthesizing of a novel terpolymer by LAP of PD, styrene (ST) and the biomass monomer MY. The discovery of the alternating sequence structure of ST and PD inspires us to further explore the development of copolymers containing this unique sequence structure. The special long branched side chain of MY and its low glass transition temperature are also conducive to the synthesis of new integrated rubbers. The <sup>1</sup>H NMR tracking analysis indicates that the polymerization pattern changes from alternating sequence to gradient block sequence with the increase of MY content. Combined with FTIR analysis, the PD monomeric units are mainly <em>trans</em>-1,4 structure and MY monomeric units are predominant <em>cis</em>-1,4 structure. Considering the extremely high polymerization activity of MY compared to ST and PD, the copolymerization rate is significantly dependent on the concentration of the PD monomer. Despite this, due to the interactions between ST and PD ([ST¦PD] intermediate), ST still tends to form alternating segments with PD. The ternary copolymerization can be viewed as a “binary gradient copolymerization” of [ST¦PD] and MY (<em>r</em><sub>MY</sub> > <em>r</em><sub>[ST¦PD]</sub>).</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"221 ","pages":"Article 113507"},"PeriodicalIF":5.8,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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