Structural analysis of poly(butylene adipate) banded spherulites from their biodegradation behavior
文献类型：期刊论文
| 作者 | Zhao, Lifen; Wang, Xiaohong; Li, Lin; Gan, Zhihua |
| 刊名 | Polymer
 |
| 出版日期 | 2007-09-21 |
| 卷号 | 48期号:20页码:6152-6161 |
| 关键词 | Banded spherulite Polymorphic crystals Enzymatic degradation |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2007.07.055 |
| 通讯作者 | Gan, zhihua(zhgan@iccas.ac.cn) |
| 英文摘要 | Poly(butylene adipate) (pba) has been reported to have polymorphic crystal structures and only the mixture of two crystal modifications (a and crystals) forms banded spherulites. however, how the two crystals coexist in banded spherulites remains to be solved. in this work, the morphological structure of pba banded spherulites was analyzed from their biodegradation behavior by means of polarized optical microscopy (pom), scanning electron microscopy (sem), atomic force microscopy (afm) and wide-angle x-ray diffraction (waxd). it was found that the banded spherulites were made up of alternate flat-on and edge-on domains in lamellar crystals along the radiating direction. to determine the distribution of two crystal modifications in banded spherulites and the interrelationships between the alternate domains with polymorphic crystal structures, the relative contents of two crystal modifications in banded spherulites were first quantified, and their changes were then correlated to the morphological changes of banded spherulites in the course of biodegradation in terms of the difference in biodegradation kinetics of two crystal modifications. it was found that the flat-on domains show a slower crystal growth rate but a faster biodegradation rate than the edge-on domains. the analysis indicates that the flat-on domains in spherulites are composed of alpha crystals, while the edge-on domains are composed of crystals. the primary growth mechanism of pba banded spherulite was proposed based on the difference in crystallization heat and kinetics of two crystal modifications. (c) 2007 elsevier ltd. all rights reserved. |
| WOS关键词 | POLYMORPHIC CRYSTALS ; BLENDS ; GROWTH ; CRYSTALLIZATION ; MORPHOLOGY ; POLY(L-LACTIDE) ; POLYHYDROXYALKANOATES ; TEREPHTHALATE) ; ORGANIZATION ; POLYMERS |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000250076600035 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2380496 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Gan, Zhihua |
| 作者单位 | 1.Chinese Acad Sci, CAS Key Lab Engn Plast, Inst Chem, Joint Lab Polymer Sci & Mat, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Lifen,Wang, Xiaohong,Li, Lin,et al. Structural analysis of poly(butylene adipate) banded spherulites from their biodegradation behavior[J]. Polymer,2007,48(20):6152-6161. |
| APA | Zhao, Lifen,Wang, Xiaohong,Li, Lin,&Gan, Zhihua.(2007).Structural analysis of poly(butylene adipate) banded spherulites from their biodegradation behavior.Polymer,48(20),6152-6161. |
| MLA | Zhao, Lifen,et al."Structural analysis of poly(butylene adipate) banded spherulites from their biodegradation behavior".Polymer 48.20(2007):6152-6161. |
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来源：中国科学院大学
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