ENZYMATIC DEGRADATION OF PLASTICS CONTAINING POLYCARPROLACTONE

被引：54

作者：

IWAMOTO, A

TOKIWA, Y

机构：

[1] JSP Corp., National Institute of Bioscience and Human-Technology, 305, 1-1 Higashi, Tsukuba, Ibaraki, Japan

来源：

POLYMER DEGRADATION AND STABILITY | 1994年 / 45卷 / 02期

关键词：

Biodegradation - Blending - Enzymes - Low density polyethylenes - Nylon polymers - Polyethylene terephthalates - Polypropylenes - Polystyrenes - Solubility - Viscosity;

D O I：

10.1016/0141-3910(94)90138-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Plastics composed of polycaprolactone (PCL) and conventional plastics (polyethylene, LDPE; polypropylene, PP; nylon 6, NY; polystyrene, PS; polyethylene terephthalate, PET; and poly-beta-hydroxybutyrate, PHB) were prepared by mechanical blending. PCL degradability of blends of PCL and PS, PCL and PET, PCL and PHB by Rhizopus arrhizus lipase dropped off remarkably. In contrast, the blends of PCL and LDPE or PP retained high biodegradability of PCL. In the case of blends of PCL and NY or PS, the biodegradability of PCL did not change so much. In addition, it was found that the degradabilities of PCL-LDPE blends by the lipase would be controlled by combining the melt viscosity of PCL with that of LDPE. In general, it seems that the higher the miscibility of PCL and conventional plastics, the harder the degradation of PCL on their blends by the lipase.

引用

页码：205 / 213

页数：9