Multiple-Step Melting/Irradiation: A Strategy to Fabricate Thermoplastic Polymers with Improved Mechanical Performance
文献类型：期刊论文
| 作者 | Zhao, JX; Wang, JY; Ding, XJ; Gu, Y; Li, YJ; Li, JY; You, JC |
| 刊名 | POLYMERS
 |
| 出版日期 | 2019 |
| 卷号 | 11期号:11页码:- |
| 关键词 | POLY(VINYLIDENE FLUORIDE) CROSS-LINKING CRYSTALLIZATION CRYSTALLINITY BEHAVIOR POLYMERIZATION IRRADIATION THICKNESS MEMBRANES STRENGTH |
| ISSN号 | 2073-4360 |
| DOI | 10.3390/polym11111812 |
| 文献子类 | 期刊论文 |
| 英文摘要 | To fabricate thermoplastic polymers exhibiting improved ductility without the loss of strength, a novel multiple-step melting/irradiation (MUSMI) strategy was developed by taking poly(vinylidene fluoride)/triallyl isocyanate (PVDF/TAIC) as an example, in which alternate melting and irradiation were adopted and repeated for several times. The initial irradiation with a low dose produced some local crosslinked points (not 3-dimensional network). When the specimen was reheated above the melting temperature, they redistributed in the PVDF matrix, which is an efficient way to avoid the high crosslinking density at certain positions and the disappearance of thermoplastic properties. During the subsequent cooling process, the crosslinked domains in the thermoplastic polymer matrix is expected to play double roles in turning crystal structures for enhancing the ductility without reducing strength. On one hand, they can act as heterogeneous nucleation agents, resulting in higher nucleation density and smaller spherulites; on the other hand, the existence of crosslinked structures restricts the lamellar thickening, accounting for the thinner crystal lamellae. Both smaller spherulites and thinner lamellae contribute to better ductility. At the same time, these local crosslinked points enhance the connectivity of crystal structures (including lamellae and spherulites), which is beneficial to the improvement of strength. Based on the influence of local crosslinked points on the ductility and strength, thermoplastic PVDF with much higher elongation at break and comparable yielding stress (relative to the reference specimen upon strong irradiation only once) was prepared via MUSMI successfully. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32137]  |
| 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.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Shanghai Normal Univ, Coll Chem & Mat Sci, Shanghai Key Lab Rare Earth Funct Mat, Educ Minist,Key Lab Resource Chem, Shanghai 200234, Peoples R China; 4.Hangzhou Normal Univ, Hangzhou 310036, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, JX,Wang, JY,Ding, XJ,et al. Multiple-Step Melting/Irradiation: A Strategy to Fabricate Thermoplastic Polymers with Improved Mechanical Performance[J]. POLYMERS,2019,11(11):-. |
| APA | Zhao, JX.,Wang, JY.,Ding, XJ.,Gu, Y.,Li, YJ.,...&You, JC.(2019).Multiple-Step Melting/Irradiation: A Strategy to Fabricate Thermoplastic Polymers with Improved Mechanical Performance.POLYMERS,11(11),-. |
| MLA | Zhao, JX,et al."Multiple-Step Melting/Irradiation: A Strategy to Fabricate Thermoplastic Polymers with Improved Mechanical Performance".POLYMERS 11.11(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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