China Plastics ›› 2021, Vol. 35 ›› Issue (10): 21-25.DOI: 10.19491/j.issn.1001-9278.2021.10.004

• Materials and Properties • Previous Articles     Next Articles

Preparation and Performance Analysis of PPC⁃based Biodegradable Water­Permeable Mulch Film

BI Xinyuan1, YAO Jianmin1,2()   

  1. 1.College of Agricultural Economics and management,Shanxi Agricultural University,Taiyuan 030006,China
    2.Micropermeable Membrane Biotechnology Co,Ltd,Taiyuan 030006,China
  • Received:2021-01-29 Online:2021-10-26 Published:2021-10-27

Abstract:

To solve the problems from the white pollution in farmlands, macromolecular poly(propylene carbonate) (PPC) and poly(butylene adipate-co?butylene terephthalate) (PBAT) were selected as two types of biodegradable materials together with powerful water permeability additives to prepare the PPC biodegradable water-permeable mulch films. The formulation and processing technology of the mulch films were optimized using the multi?blow film method, and their mechanical properties and degradation performance were characterized using a universal tensile tester and ultraviolet aging test box. The results indicated that according to the optimized formulation and processing technology of the preferred scheme A9 and A2, a thin PPC-based biodegradable water-permeable mulch film with a thickness of (0.007±0.002) mm was successfully prepared using a water-permeable mulch film processing technology. The mechanical properties of six products trial-produced based on the schemes A9 and A2 could meet the requirements of GB/T 35795-2017. The membrane surface of the mulch film with a thickness of 0.007 mm began to crack within 60 days, and its degradation degree was 77.06 % and 95.72 % within 180 and 360 days, respectively.

Key words: poly(propylene carbonate), poly(butylene adipate-co-butylene terephthalate), biodegradability, water-permeable film, process

CLC Number: