Grafting of telechelic poly(lactic-co-glycolic acid) onto O2 plasma-treated polypropylene flakes.pdf

下载文档

1
0
约1.97万字
约 7页
2017-04-06 发布于江苏
举报
版权申诉
保障服务

Grafting of telechelic poly(lactic-co-glycolic acid) onto O2 plasma-treated polypropylene flakes.pdf

1、本文档共7页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

Grafting of telechelic poly(lactic-co-glycolic acid) onto O2 plasma-treated polypropylene flakes

Grafting of Telechelic Poly(lactic-co-glycolic acid) onto O2 Plasma-Treated Polypropylene Flakes Jing Ren,1 Xiaoqing Hua,1 Tianzhu Zhang,1,2 Zhigang Zhang,3 Zhenling Ji,3 Ning Gu1,2 1Jiangsu Key Laboratory for Biomaterials and Devices, State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Sipailou 2, Nanjing 210096, China 2Suzhou Key Lab of Biomedical Materials and Technology, Research Institute of Southeast University in Suzhou, Ren Ai Road 150, Suzhou Industrial Park, Suzhou 215123, China 3Department of General Surgery, Zhong-Da Hospital, Southeast University, Dingjiaqiao 87, Nanjing 210009, China Received 15 May 2010; accepted 3 October 2010 DOI 10.1002/app.33510 Published online 17 February 2011 in Wiley Online Library (). ABSTRACT: In this work, we described a facile approach to preparing polypropylene (PP) surface func- tionalized with telechelic poly(lactic-co-glycolic acid) (HO- PLGA-COOH). The PP flakes were first treated with oxy- gen plasma and then grafted with different molecular weight PLGA (Mw ? 50, 100, and 300 K) in dry dichloro- methane solution with the addition of phosphorus penta- chloride (PCl5). The attenuated total reflectance-Fourier transform infrared (ATR–FTIR) spectroscopy measure- ments were used to characterize the composition of the PP surface. The appearance of 1756 cm1 for carbonyl (C?O) stretching and 1090 cm1 for CAOAC and the morpholo- gies observations by atomic force microscopy show that PLGA graft covered the surface of PP flake. The IR inten- sity at 1756 cm1 increases with the decreasing Mw of PLGA, and the molecular weight of PLGA also influence the grafting of PLGA on PP. The contact angle was used to monitor the changes in hydrophilicity of PP flake sur- face along the treatment procedure. PLGA-grafted PP (PP- g-PLGA) was eventually obtained. VC 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 210–216, 2011 Key words: polypropylene; telechelic poly(lactic-c