期刊
MATERIALS RESEARCH EXPRESS
卷 6, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/ab050d
关键词
polymer grafting; polycaprolactone; maleic anhydride
资金
- CNPq (National Council for Scientific and Technological Development, Brasilia/DF, Brazil)
- CAPES (Coordination for the Improvement of Higher-Level Education, Brasilia/DF, Brazil)
Maleic anhydride grafted poly(epsilon-caprolactone) (PCL-g-MA) was prepared by grafting MA on PCL using an internal mixer and by reactive extrusion using dycumil peroxide (DCP) as an initiator. Experimental design 2(3) was used with the purpose of evaluating the most efficient reaction condition at higher reliability for grafting. PCL degradation was assessed by intrinsic viscosity and size exclusion chromatography (SEC), percentage of reacted maleic anhydride (%g-MA) was measured by titration. Results of PCL-g-MA were also characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetric analyzes (TGA). In general, data presented differences in the applied processes, maleic anhydride concentration (C-MA) was more significant for higher grafting content during reactions taking place in the internal mixer whereas for the reactive extrusion the grafting level is dependent on the dicumyl peroxide concentration and reaction temperature ratio (C-DCP/TEMP) at higher temperatures. Comparing the employed processes, regardless the synthesis temperature, reactive extrusion was more efficient with higher grafting content, with maximum gains of 80% related to the same internal mixer formulation. Summing up PCL functionalization was effective and the use of PCL-g-MA as a compatibilizer is promising.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据