Journal of Applied Polymer Science最新文献_第5页

Transition and Migration of Ziegler–Natta Catalyst System in Propylene Polymerization. I. Quantitative 1H NMR Analysis of the Extracts From Polypropylene Granules

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-20 DOI: 10.1002/app.56878

Lining Zhao, Jie Li, Qiang Liu, Hongxing Zhang, Guoxin Li, Zhiqin Liu, Yan Gao, Fushan Wang, Peng Liu

引用次数: 0

Flame Retardant, Smoke Suppressant, and Thermal Degradation Properties of Poly(Vinyl Chloride) Treated With Fibrous Tin-Based Metal–Organic Framework

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-20 DOI: 10.1002/app.56886

Lian-lian Duan, Xiao-xia Xu, Fu-ya Liu, Jie Wu, Hong-qiang Qu, Jian-zhong Xu, Hai-yun Ma, Yun-hong Jiao

{"title":"Flame Retardant, Smoke Suppressant, and Thermal Degradation Properties of Poly(Vinyl Chloride) Treated With Fibrous Tin-Based Metal–Organic Framework","authors":"Lian-lian Duan, Xiao-xia Xu, Fu-ya Liu, Jie Wu, Hong-qiang Qu, Jian-zhong Xu, Hai-yun Ma, Yun-hong Jiao","doi":"10.1002/app.56886","DOIUrl":"https://doi.org/10.1002/app.56886","url":null,"abstract":"<div>\u0000 \u0000 <p>The current basic requirement for additive flame retardants is to improve flame retardancy while minimizing damage to the mechanical properties of the matrix. Many studies have reported that fibrous flame retardants not only improve flame retardancy but also enhance the performance of the flame-retardant polymer matrix. Therefore, a fibrous tin-based metal–organic framework material (SnBDC) in this study was prepared in an aqueous solution and studied as a flame retardant in poly(vinyl chloride) (PVC) matrix through the following methods: the limiting oxygen index (LOI), cone calorimetry, universal tensile testing machine, a thermogravimetric analyzer coupled with a mass spectrometer, scanning electron microscopy and X-ray diffractometer, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Compared with PVC, the LOI value and tensile strength of the flame-retardant PVC sample treated with 2 phr SnBDC (PVC/2) were increased by 3 units and 34%, respectively; the peak heat release rate, peak smoke production rate, and total smoke production of PVC/2 were reduced by 44%, 66%, and 45%, respectively. SnBDC mainly accelerates the dechlorination of PVC in the first stage, promotes the cross-linking of PVC dechlorination products into char, and inhibits especially the release of aromatic compounds.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 20","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Green Polyurethane Foam Coated With a Copolymer Containing TiO2 Nanoparticles Through Non-Solvent Induced Phase Separation: A Photocatalytic Water Cleaning Approach

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-18 DOI: 10.1002/app.56869

Philipe Augusto Pocidonio Silva, Eduardo Henrique Martins Nunes, Marys Lene Braga Almeida, Rodrigo Lambert Oréfice

{"title":"Green Polyurethane Foam Coated With a Copolymer Containing TiO2 Nanoparticles Through Non-Solvent Induced Phase Separation: A Photocatalytic Water Cleaning Approach","authors":"Philipe Augusto Pocidonio Silva, Eduardo Henrique Martins Nunes, Marys Lene Braga Almeida, Rodrigo Lambert Oréfice","doi":"10.1002/app.56869","DOIUrl":"https://doi.org/10.1002/app.56869","url":null,"abstract":"<div>\u0000 \u0000 <p>The expansion of human population in many parts of the world is increasing the demand for fresh water and the contamination of water by contaminants such as dye, and others requires efficient, easy-to-use, cheap and environmentally sustainable technologies to perform water purification tasks. In this work, nanostructured eco-friendly bio-based castor oil polyurethane foams that can remove heavy metal ions from contaminated water were customized to add another function associated with the photodegradation of organic molecules. To this end, nanostructured polyurethane foams (containing cellulose-halloysite nanocomposite units) were coated with poly(styrene)-b-(polyethylene-ran-butylene)-b-polystyrene (SEBS) by non-solvent induced phase separation (NIPS) process for the first time. The deposition of the coating also allowed the incorporation of titanium dioxide (TiO<sub>2</sub>) nanoparticles by applying a new strategy, in which the nanoparticles were suspended in the non-solvent prior to the NIPS process. These modulated and mixed technologies have generated polyurethane foams capable of degrading at least 10% of methylene blue dye through photocatalysis. The photocatalytic system is inactivated by pH where pH = 2.0 does not promote photocatalysis but the process is activated in water pH. The effect of photocatalysis generated with only 0.5% by mass of TiO<sub>2</sub> in the foam, approximately 10 mg of TiO<sub>2</sub>, was 9.22% and 10.02% for approximately 20 mg.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 of 2-Methyl-1,3-Propanediol Modified Azelaic Acid-Octanediol Copolyester Plasticizers and Their Plasticizing Effect on Polyvinyl Chloride

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-18 DOI: 10.1002/app.56849

Wanjing Zhang, Yuqi Shan, Liyan Wang, Yanming Chen, Liying Guo, Yunsheng Chong, Xin Qian

{"title":"Synthesis of 2-Methyl-1,3-Propanediol Modified Azelaic Acid-Octanediol Copolyester Plasticizers and Their Plasticizing Effect on Polyvinyl Chloride","authors":"Wanjing Zhang, Yuqi Shan, Liyan Wang, Yanming Chen, Liying Guo, Yunsheng Chong, Xin Qian","doi":"10.1002/app.56849","DOIUrl":"https://doi.org/10.1002/app.56849","url":null,"abstract":"<div>\u0000 \u0000 <p>Currently, mainstream phthalate plasticizers pose serious threats to the environment and human health. As an eco-friendly and harmless alternative, polyester plasticizers have garnered widespread attention. However, their complex preparation process and low plasticizing efficiency have limited their practical application. In this study, a series of copolyester plasticizers (POMAZ), synthesized from azelaic acid, octanediol, and various contents of 2-methyl-1,3-propanediol (MPO), were prepared via direct esterification. The preparation process is controllable, and the number-average molecular weight of POMAZ ranges from 1000 to 4000, with a thermal degradation temperature above 270°C, demonstrating excellent thermal stability. PVC samples plasticized with POMAZ showed a decrease in glass transition temperature to −30°C and increased hydrophilicity with higher MPO content. Measurements of the tensile elongation at break of plasticized PVC verified the outstanding plasticizing performance of the POMAZ series. Specifically, POMAZ-45/PVC exhibited an elongation at break of up to 975.3%, with a plasticizing efficiency reaching 273.2%.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Improved High-Temperature Energy Storage Performance of Mass Production-Polypropylene Capacitive Films by Optimizing the Casting Temperatures

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-18 DOI: 10.1002/app.56864

Guoheng Liu, Tianqi Wang, Tiandong Zhang, Chao Yin, Yue Zhang, Yongquan Zhang, Changhai Zhang, Qingguo Chi

{"title":"Improved High-Temperature Energy Storage Performance of Mass Production-Polypropylene Capacitive Films by Optimizing the Casting Temperatures","authors":"Guoheng Liu, Tianqi Wang, Tiandong Zhang, Chao Yin, Yue Zhang, Yongquan Zhang, Changhai Zhang, Qingguo Chi","doi":"10.1002/app.56864","DOIUrl":"https://doi.org/10.1002/app.56864","url":null,"abstract":"<div>\u0000 \u0000 <p>Polypropylene (PP) are the most widely used dielectric materials for film capacitor due to the ultra-low dielectric loss and high breakdown strength. However, PP films are not allowed to operate exceed 105°C due to the markedly increase in conduction loss at elevated temperature. This study proposes an efficient strategy to enhance the high-temperature capacitive properties of PP films by regulating the casting temperatures during the melt-extrusion-casting process. The results show that the casting temperature has a deep influence on the surface morphology and crystal structures, which also affects the electrical performance especially the dielectric property at high temperature. The PP films prepared under an extrusion temperature of 210°C and the tape casting temperature of 140°C deliver the optimal energy storage property, a discharge energy density of 1.93 J cm<sup>−3</sup> and an energy storage efficiency of 81% at 125°C, accompanying excellent cycle performance.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effect of Deep Eutectic Solvent on the Graphitization and Thermal Properties of Polyimide Films

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-18 DOI: 10.1002/app.56879

Jintao Huang, Haoxin Lv, Xiaojun Zhao, Jong-Min Lee, Yonggang Min

{"title":"Effect of Deep Eutectic Solvent on the Graphitization and Thermal Properties of Polyimide Films","authors":"Jintao Huang, Haoxin Lv, Xiaojun Zhao, Jong-Min Lee, Yonggang Min","doi":"10.1002/app.56879","DOIUrl":"https://doi.org/10.1002/app.56879","url":null,"abstract":"<div>\u0000 \u0000 <p>Overheating of electronic devices reduces lifespan and increases safety risks. The use of graphite films with high thermal conductivity to enhance thermal dissipation in electronic equipment is of significant importance. This study used urea-choline chloride (UCC) to modify polyimide (PI) films from two different monomer systems, which were then graphitized to prepare a novel graphite film with high thermal conductivity. The direct formation of hydrogen bonds between poly(amic acid) (PAA) and UCC facilitates the ordered structure during thermal imidization, enhancing the graphitization degree and thermodynamic properties of PI films. The results indicate that the graphitization degree of PI films increased from 30% to over 59% in the 4,4′-oxydianiline-pyromellitic dianhydride (OPU) system and from 80% to over 92% in the 4,4′-diaminobenzoyltiphenylamine-3,3′,4,4′-biphenyl tetracarboxylic dianhydride (DBU) system. Notably, 4,4′-oxydianiline-pyromellitic dianhydride-3.5 wt% urea-choline chloride (OPU35) and 4,4′-diaminobenzoyltiphenylamine-3,3′,4,4′-biphenyl tetracarboxylic dianhydride-3.5 wt% urea-choline chloride (DBU35) exhibited the highest thermal conductivity in their respective systems, with coefficients of 45 and 742 W/m K, representing 200% and 47.8% improvements over pure PI-based graphite films. This provides a new material for heat dissipation in electronic devices.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 20","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143827047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Investigating the Impact of Interference on the Structure and Characteristics of Self-Stratifying Coatings

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-18 DOI: 10.1002/app.56846

Zihan Lin, Xingyu Wang, Huan Zhou, Weili Li, Fan Yang, Ruofei Liu, Fangming Wang, Zhengbai Zhao, Hui Yan, Lixin Xu

{"title":"Investigating the Impact of Interference on the Structure and Characteristics of Self-Stratifying Coatings","authors":"Zihan Lin, Xingyu Wang, Huan Zhou, Weili Li, Fan Yang, Ruofei Liu, Fangming Wang, Zhengbai Zhao, Hui Yan, Lixin Xu","doi":"10.1002/app.56846","DOIUrl":"https://doi.org/10.1002/app.56846","url":null,"abstract":"<div>\u0000 \u0000 <p>Self-stratifying coatings, with their convenient painting process and superior coating properties, are considered to be an important direction for replacing traditional coatings. However, due to the relatively complex composition of a coating and its curing process, it is necessary to find a suitable method to track and investigate the film-forming mechanism of coatings. In this paper, we have modified PHMS (polyhydromethylsiloxane) to equip it with the same functional groups as epoxy resin and then physically blended it with epoxy resin to prepare a composite coating with self-stratifying characteristics. To study the preparation, curing, and aging properties of the coating in real time, the AIEgens were introduced into the coating materials, which are capable of emitting fluorescent light (under excitation), depending on whether the molecular rotors of AIEgens are constrained or free to move. Research has proven that the modified PHMS (G-PHMS) can effectively interact with epoxy resin to form a composite coating with a self-stratifying structure. The effective mutual compounding between the two endows the coating with good hydrophobicity and self-cleaning properties, good thermal stability, excellent mechanical properties, and corrosion resistance. With the simple process of coating and its superior performance, it has promising applications in industry.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Tailoring Light Weight Polypyrrole Aerogel Towards Improved Reflection Loss With High Efficiency and Wide Band Absorption

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-18 DOI: 10.1002/app.56852

Jianjian Yang, Qizhi Zhao, Kejun Wang, Zhengwei Ye

引用次数: 0

Application Potential of UHMWPE Based Composite Materials With MWCNTs and ZnO Addition in Acetabular Cup Prostheses 添加了 MWCNT 和氧化锌的超高分子量聚乙烯基复合材料在髋臼杯假体中的应用潜力

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-18 DOI: 10.1002/app.56893

Songquan Wang, Lu Yu, Yun Bo, Jiaqi Jia, Yudie Dong, Yuming Cui, Haiquan Li, Wenlu Hang

{"title":"Application Potential of UHMWPE Based Composite Materials With MWCNTs and ZnO Addition in Acetabular Cup Prostheses","authors":"Songquan Wang, Lu Yu, Yun Bo, Jiaqi Jia, Yudie Dong, Yuming Cui, Haiquan Li, Wenlu Hang","doi":"10.1002/app.56893","DOIUrl":"https://doi.org/10.1002/app.56893","url":null,"abstract":"<div>\u0000 \u0000 <p>In order to improve the wear and aging resistance of UHMWPE based polymer acetabular cup prosthesis, the hot-embossing method is used to prepare multi-component MWCNTs/ZnO added UHMWPE based composite materials in this article. The research results found that the diffusion characteristics of MWCNTs/ZnO additives in composite materials have a significant impact on their wear resistance. Under the condition of 25% NBS, the wear rate of the UMZ-3 sample was 13.94% lower than that of the pure U sample. Although MWCNTs can play a role in reducing friction to a certain extent, their high hardness characteristics may lead to the release of the composite material as a third body during friction. The optimization of heat transfer performance of MWCNTs/ZnO composite materials has alleviated the aging process to a certain extent and suppressed the softening phenomenon. Compared with the OI value of the pure U sample, which is in the range of 1.4–5.1, the OI value of the UMZ-3 sample is in the range of 2.62–3.06. In addition, the synergistic effect of MWCNTs/ZnO effectively inhibits the oxidation process while also having a positive impact on cell proliferation, demonstrating its potential as an additive to enhance the service life of polymer acetabular cups.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 20","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Empowering Green Energy: ί-Carrageenan Based Solid Polymer Electrolytes for Zinc Ion Batteries

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56866

P. C. Dhanush, Ismayil

引用次数: 0