A NEW KINETIC-MODEL FOR THE ACCUMULATION OF POLY(3-HYDROXYBUTYRATE) IN ALCALIGENES-EUTROPHUS .1. GRANULE GROWTH

被引：9

作者：

KURJA, J

ZIRKZEE, HF

DEKONING, GM

MAXWELL, IA

机构：

[1] ETH HONGGERBERG,INST BIOTECHNOL,CH-8093 ZURICH,SWITZERLAND

[2] MEMTEC,S WINDSOR,NSW 2756,AUSTRALIA

来源：

MACROMOLECULAR THEORY AND SIMULATIONS | 1995年 / 4卷 / 04期

关键词：

D O I：

10.1002/mats.1995.040040416

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

A new kinetic model is proposed for the accumulation of poly(3-hydroxybutyrate) (PHB) in Alcaligenes eutrophus. The model developed is closely related to the descriptive model of Harkins for the emulsion polymerization process. The PHB accumulation is discussed in terms of polymerization events such as initiation, propagation and termination, taking into account the heterogeneous nature of the system. Experimental results on the PHB accumulation in Alcaligenes eutrophus can be described in both a quantitative and qualitative manner by the model. Further, it is shown that the decrease in the rate of polymerization during the PHB accumulation can be explained by coalescence of the granules. The decrease of the molecular weight of the polymer formed during the accumulation process can be fully explained in terms of the kinetic mechanisms of progapation and chain transfer, and the effect of granule size on these.

引用

页码：839 / 855

页数：17

共 36 条

[1]

OCCURRENCE, METABOLISM, METABOLIC ROLE, AND INDUSTRIAL USES OF BACTERIAL POLYHYDROXYALKANOATES [J].