Rheology, polymorphic crystal transformation, thermal, and mechanical properties of long-chain branched isotactic poly(1-butene)
文献类型：期刊论文
| 作者 | Maimaitiming, A; Wu, GZ; Tan, HR; Wang, ML; Zhang, MJ; Hu, JT; Xing, Z |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 137期号:9页码:- |
| 关键词 | CRYSTALLIZATION BEHAVIOR PHASE-TRANSITION GAMMA-RADIATION FORM II POLYPROPYLENE MORPHOLOGY COPOLYMERS TOPOLOGY KINETICS MELT |
| ISSN号 | 0021-8995 |
| DOI | 10.1002/app.48411 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Effects of long-chain branches (LCBs) on the rheology, crystal polymorphism, polymorphic transformation, and corresponding thermal and mechanical properties at different crystallization conditions, of isotactic poly(1-butene) (iPB-1) are systematically studied. The complex viscosity decreases and tangent increases with the increase of LCB concentration, and they inversely correlate with gels. The low branched samples crystallize into pure Form II by compression molding and cooling the melt to room temperature at a low crystallization cooling rate, whereas the moderate-to-highly branched samples crystallize into mixtures of Forms II and III, with a 1-30% fraction of crystals of Form III. The transformation of Form II into Form I in low branched iPB-1 was not significantly decelerated at different crystallization cooling rates, which is important in thermoforming, foaming, and extrusion blowing processes. Upon heating, Form III in highly branched iPB-1 with gels does not cold-crystallize into Form II even at a low heating rate. The low-to-highly branched samples mainly in Form I exhibit high yield strength, high melting temperature, and lower ductility, while the highly branched iPB-1 containing gels and mixtures of Forms I, III, and I ' possess brittleness. Under stretching, Form III predominantly transforms into Form I via a solid-solid crystal transition. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48411. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32192]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Maimaitiming, A,Wu, GZ,Tan, HR,et al. Rheology, polymorphic crystal transformation, thermal, and mechanical properties of long-chain branched isotactic poly(1-butene)[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2019,137(9):-. |
| APA | Maimaitiming, A.,Wu, GZ.,Tan, HR.,Wang, ML.,Zhang, MJ.,...&Xing, Z.(2019).Rheology, polymorphic crystal transformation, thermal, and mechanical properties of long-chain branched isotactic poly(1-butene).JOURNAL OF APPLIED POLYMER SCIENCE,137(9),-. |
| MLA | Maimaitiming, A,et al."Rheology, polymorphic crystal transformation, thermal, and mechanical properties of long-chain branched isotactic poly(1-butene)".JOURNAL OF APPLIED POLYMER SCIENCE 137.9(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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