The influence on quality of polypropylene manufactured by batchwise liquid phase bulk polymerization is analyzed, the reason of producing block, black and degraded polypropylene powder is discussed, and the precautionary measures are also given.

Raw bamboo fibers reinforced polylactide biodegradable material was prepared by means of non-woven method and moulding pressing technology.

Petroleum olefins based raw materials are non-renewable resources,thus it becomes a hot topic of general interest by using abundant carbohydrate resource to replace petroleum for biology industry at home and abroad to produce synthetic chemicals,degradable materials and bioenergy.

The paper introduced the research development and application of starch blend material,which is one of important degradable materials.

The controlled-release character and formulation of degradable materials with starch used as the base material were studied.

Review on development actualities of degradable plastics;

Development and application of complete degradable plastic;

Research Progress of starch based biodegradable plastics;

Processing property and molding method of degradable plastics;

Research and development of degradable plastics in China;