Multiple Relaxation Behavior of Long Chain Branched Polylactic Acid
文献类型：期刊论文
| 作者 | Wang Yong-Bin1,2; Niu Yan-Hua1; Yang Liang1,2; Yu Feng-Yuan3; Zhang Hong-Bin3; Wang Zhi-Gang1 |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2010-02-10 |
| 卷号 | 31期号:2页码:397-401 |
| 关键词 | Polylactic Acid Long Chain Branching Shear Rheology Multiple Relaxation Behavior Degree Of Branching |
| ISSN号 | 0251-0790 |
| 英文摘要 | The long chain branched polylactic acid(PLA) samples were successfully fabricated by high energy irradiation in the presence of a small amount of poly-functional monomer. The branched structures of PLA were convinced by size exclusion chromatography(SEC) coupled with a multi-angle laser light scattering(MALLS). By the means of oscillatory shear and creep measurements, the shear rheological behavior of branched PLA was investigated. Meanwhile, the weighted relaxation spectra of PLA were calculated in light of the combined dynamic modulus data. The multiple relaxation behavior of PLA, which was attributed to the existence of different lengths of long chain branches, was actually observed. In addition, a novel procedure for quantificational determination of the lengths of branches and the arm molecular weight of PLA was put forward. It was found that the lengths of branches of PLA were extended and the arm molecular weight was enhanced with increasing amount of poly-futictional monomer. The above results could facilitate the fabrication of long chain branched PLA with well-controlled branched structures and improved rheological properties that may dominate the future bio-plastics industry. |
| 语种 | 英语 |
| WOS记录号 | WOS:000275476600036 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/70943]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang Zhi-Gang |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Yong-Bin,Niu Yan-Hua,Yang Liang,et al. Multiple Relaxation Behavior of Long Chain Branched Polylactic Acid[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2010,31(2):397-401. |
| APA | Wang Yong-Bin,Niu Yan-Hua,Yang Liang,Yu Feng-Yuan,Zhang Hong-Bin,&Wang Zhi-Gang.(2010).Multiple Relaxation Behavior of Long Chain Branched Polylactic Acid.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,31(2),397-401. |
| MLA | Wang Yong-Bin,et al."Multiple Relaxation Behavior of Long Chain Branched Polylactic Acid".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 31.2(2010):397-401. |
入库方式： OAI收割
来源：化学研究所
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