|
|||||
|
|
Grafting of maleic anhydride on poly(L-lactic acid). Effects on physical and mechanical properties |
|
| Authors: | Sung Wook Hwang Sang Bong LeeChang Kee Lee Jun Young LeeJin Kie Shim Susan E.M. SelkeHerlinda Soto-Valdez Laurent MatuanaMaria Rubino Rafael Auras |
| Affiliation: | a Korea Packaging Center, Korea Institute of Industrial Technology, Bucheon, South Korea b The School of Packaging, Michigan State University, 140, Packaging Building, East Lansing, MI 48823, USA c Centro de Investigación en Alimentación y Desarrollo, A.C., CTAOV, Hermosillo, Sonora, Mexico |
| Abstract: | Maleic Anhydride (MAH) was grafted onto poly(L-lactic acid) (PLLA) in the presence of dicumyl peroxide (DCP) as a radical initiator. The effect of the MAH and DCP concentrations on the grafting and the physical and mechanical properties of PLLA films were investigated. The glass transition temperature and crystallinity significantly decreased with addition of MAH. The thermal decomposition of the PLLA films was affected by the MAH content while the mechanical properties were almost unchanged. A slight increase in molecular weight was found, which could be attributed to either the MAH branching reaction or a possible crosslinking reaction between the PLLA chains increasing the chain entanglements. |
| Keywords: | Graft Blending Initiator Mechanical properties |
| 本文献已被 ScienceDirect 等数据库收录！ | |