Rheology and Crystallization of Long-Chain Branched Poly(L-lactide)s with Controlled Branch Length
文献类型：期刊论文
| 作者 | Wang, Liangyan1,2; Jing, Xiabin1; Cheng, Haibo1,2; Hu, Xiuli1; Yang, Lixin1,2; Huang, Yubin1 |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2012-08-22 |
| 卷号 | 51期号:33页码:10731-10741 |
| ISSN号 | 0888-5885 |
| DOI | 10.1021/ie300524j |
| 英文摘要 | A series of long-chain branched poly(L-lactide)s (LCB-PLAs) with controlled branch length were prepared by a simple and efficient method through a combination of ring-opening polymerization (ROP) of L-lactide and a coupling reaction between the terminal OH groups of the PLA prepolymers and the NCO groups of HDI. The influences of reaction conditions on the synthesis of the LCB-PLAs were investigated, and the structures of the resultant LCB-PLAs were characterized by H-1 NMR spectroscopy and SEC-MALLS. By adjusting the degree of polymerization and the composition of the prepolymers, LCB-PLAs with different branch densities and molecular weights between branch points were obtained. The effect of macromolecular chain branching on the rheology and crystallization of PLA was also investigated. The LCB structure contributed to the enhancement of the zero-shear viscosity, complex viscosity, storage modulus, melt strength, and strain hardening under elongational flow. Thermal behavior indicated that the branch structure resulted in a short nucleation induction period and more rapid crystallization, which can be a guarantee of high-strength foams. |
| 语种 | 英语 |
| WOS记录号 | WOS:000307698200001 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47647]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Huang, Yubin |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Liangyan,Jing, Xiabin,Cheng, Haibo,et al. Rheology and Crystallization of Long-Chain Branched Poly(L-lactide)s with Controlled Branch Length[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2012,51(33):10731-10741. |
| APA | Wang, Liangyan,Jing, Xiabin,Cheng, Haibo,Hu, Xiuli,Yang, Lixin,&Huang, Yubin.(2012).Rheology and Crystallization of Long-Chain Branched Poly(L-lactide)s with Controlled Branch Length.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,51(33),10731-10741. |
| MLA | Wang, Liangyan,et al."Rheology and Crystallization of Long-Chain Branched Poly(L-lactide)s with Controlled Branch Length".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 51.33(2012):10731-10741. |
入库方式： OAI收割
来源：化学研究所
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