Effect of peroxide crosslinking on thermal and mechanical properties of poly(epsilon-caprolactone)
文献类型：期刊论文
| 作者 | Han, Changyu; Ran, Xianghai; Su, Xuan; Zhang, Kunyu; Liu, Nanan; Dong, Lisong |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 56期号:5页码:593-600 |
| 关键词 | Crosslinking Poly (Epsilon-caprolactone) Biodegradable Thermomechanical Properties |
| ISSN号 | 0959-8103 |
| DOI | 10.1002/pi.2156 |
| 英文摘要 | Poly(epsilon-caprolactone) (PCL), a saturated polyester, derived from ring-opening polymerization of epsilon-caprolactone, was chemically crosslinked with various amounts of benzoyl peroxide (BPO) by a two-step method by first evenly dispersing the BPO into the PCL matrix and then crosslinking at elevated temperature. The gel fraction increased with an increase in BPO content. The modified Charlesby-Pinner equation was used to calculate the ratio of chain scission and crosslinking. The results showed that both scission and crosslinking occurred, and that crosslinking predominated over scission. The number-average molecular weight between the crosslinks determined by the rubber elasticity theory using the hot set test showed a decrease with increasing BPO content. The melting temperature and crystallinity decreased with an increase in BPO content, and the crystallization temperature increased after crosslinking. Dynamic mechanical analysis results showed a decrease in the glass transition temperature as a result of chemical crosslinking of PCL. This was explained by the observed reduction in crystallinity and the increase in free volume due to restrictions in chain packing. Moreover, Young's modulus and elongation at break generally decreased with an increase in BPO content, but the tensile strength first increased with BPO content up to 1.0 wt%, reached a maximum, and then decreased. (C) 2007 Society of Chemical Industry. |
| 语种 | 英语 |
| WOS记录号 | WOS:000245849300003 |
| 出版者 | JOHN WILEY & SONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62533]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Dong, Lisong |
| 作者单位 | 1.Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Changyu,Ran, Xianghai,Su, Xuan,et al. Effect of peroxide crosslinking on thermal and mechanical properties of poly(epsilon-caprolactone)[J]. POLYMER INTERNATIONAL,2007,56(5):593-600. |
| APA | Han, Changyu,Ran, Xianghai,Su, Xuan,Zhang, Kunyu,Liu, Nanan,&Dong, Lisong.(2007).Effect of peroxide crosslinking on thermal and mechanical properties of poly(epsilon-caprolactone).POLYMER INTERNATIONAL,56(5),593-600. |
| MLA | Han, Changyu,et al."Effect of peroxide crosslinking on thermal and mechanical properties of poly(epsilon-caprolactone)".POLYMER INTERNATIONAL 56.5(2007):593-600. |
入库方式： OAI收割
来源：化学研究所
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