生物基聚合物PHBV和PLA复合材料在不同介质中的生物降解及其影响因素

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Abstract

The plastic production of traditional technology not only depends on the continuous development and utilization of petroleum resources, but also creates unprecedented pressure on the environment. In recent years biobased polymers (polybutyric acid valerate-PHBV, polylactic acid -PLA) have become an alternative to traditional petroleum based plastics. The research work by means of burial respirometry test to access biodegradation propensity in different media (soil, compost, river water) of bio-based packaging polymers such as poly (hydroxybutyrate-co-hydroxyvalerate) (PHBV), poly (lactic acid) (PLA) and their blends and composites loaded with fillers of organic (lignin), inorganic (montmorillonite named Dellite) nature and chain extenders (Joncryl). The results showed that 1)When the addition of extenders Joncryl was 5%, the result behaved the significantly inhibit effect on PHBV and PLA based composite samples in all media; 2)When the addition of Joncryl was 0.2%, it did not interfere with the Biodegradation Behavior of the samples; 3)In the mature compost, the biodegradation rate of PLA composites was significantly lower than that of the mixture of PHBV matrix; 4)Organic lignocellulosic additive (hazelnut shell powder) added to polymer alone or combined with chain extender Joncryl and non-organic additive (Dellite72T) can promote the compatible connectivity of PLA polymer; It concluded that new additive has an important effect on the biodegradation process by adding two or three phases in different media, the study will provide a theoretical basis for the biodegradation effect of the new material.

Key words： bio-based polymers different media multiple added biodegradation assessment of propensity

Received: 20 December 2017

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	Articles by authors
	CHEN Hai-yan
	WU Feng-chang
	WEI Yuan
	Andrea CORTI
	Emo CHIELLINI
	BAI Ying-chen
	FENG Wei-ying
	ZHANG Chen

Cite this article:

CHEN Hai-yan,WU Feng-chang,WEI Yuan等. Biodegradation of biologically based polymer PHBV and PLA composites in different media and its influencing factors[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(7): 2706-2713.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I7/2706

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