A COMPARATIVE-STUDY OF THE DEGRADABILITY AND RECYCLABILITY OF DIFFERENT CLASSES OF DEGRADABLE POLYETHYLENE

被引:21
作者
ALMALAIKA, S
CHOHAN, S
COKER, M
SCOTT, G
ARNAUD, R
DABIN, P
FAUVE, A
LEMAIRE, J
机构
[1] UNIV CLERMONT FERRAND,PHOTOCHIM LAB,CNRS,URA 433,CLERMONT FERRAND,FRANCE
[2] UNIV CLERMONT FERRAND,CHIM ORGAN & BIOL LAB,CNRS,URA 433,CLERMONT FERRAND,FRANCE
[3] UNIV CLERMONT FERRAND,PHOTOCHIM LAB,CNRS,URA 433,CLERMONT FERRAND,FRANCE
来源
JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY | 1995年 / A32卷 / 04期
关键词
D O I
10.1080/10601329508010283
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Abiotic degradation of representative samples from available commercial photo(bio)degradable polyethylene films was examined with respect to the rate and extent of degradation, oxidation products, and changes in molecular weight both during outdoor exposure and in laboratory photoaging devices with different accelerating factors. Although the rate of photoxidation was found to depend on the type of degradation system used, all the samples showed rapid rate of carbonyl formation with concomitant reduction in molecular weight and mechanical properties on exposure to UV light. The photofragmented polymers were shown to be much more hydrophilic in nature compared to the unoxidized analogues, and photofragments of all samples were found to contain high levels of low molecular weight( bioassimilable) carboxylic acids and esters. Recycling behavior of virgin polyolefins, both as homopolymers and heterogenous polymer blends, which contained 10% of nonoxidized and photooxidized photo(bio)degradable plastics was examined. It was found that the initial mechanical performance of homogeneous blends was not greatly affected by the presence of nonoxidized degradable materials. However, blends containing degradable films which were initially partially photooxidized had a much more detrimental effect on the recycled blends properties during processing and weathering; the effect was minimal for degradable polymers containing the iron-nickel dithiocarbamate system.
引用
收藏
页码:709 / 730
页数:22
相关论文
共 24 条
[1]   MECHANISMS OF ANTIOXIDANT ACTION - TIME-CONTROLLED STABILIZATION OF POLYPROPYLENE BY TRANSITION-METAL DITHIOCARBAMATES [J].
ALMALAIAKA, S ;
MAROGI, A ;
SCOTT, G .
POLYMER DEGRADATION AND STABILITY, 1987, 18 (01) :89-98
[2]   MECHANISMS OF ANTIOXIDANT ACTION - TRANSFORMATIONS INVOLVED IN THE ANTIOXIDANT FUNCTION OF METAL DIALKYL DITHIOCARBAMATES .3. [J].
ALMALAIKA, S ;
MAROGI, A ;
SCOTT, G .
JOURNAL OF APPLIED POLYMER SCIENCE, 1987, 33 (05) :1455-1471
[3]   MECHANISMS OF ANTIOXIDANT ACTION - TIME-CONTROLLED PHOTOANTIOXIDANTS FOR POLYETHYLENE BASED ON SOLUBLE IRON COMPOUNDS [J].
ALMALAIKA, S ;
MAROGI, AM ;
SCOTT, G .
JOURNAL OF APPLIED POLYMER SCIENCE, 1986, 31 (02) :685-698
[4]  
ALMALAIKA S, 1983, DEGRADATION STABILIS, pCH6
[5]  
ALMALAIKA S, 1993, ATMOSPHERIC OXIDATIO, V1, P77
[6]  
ALMALAIKA S, 1983, DEV POLYM STABILISAT, V6, pCH3
[7]  
ALMALAIKA S, 1983, DEGRADATION STABILIS, pCH7
[8]   MECHANISM OF PHOTO-INITIATION PROCESS IN POLYETHYLENE [J].
AMIN, MU ;
SCOTT, G ;
TILLEKERATNE, LM .
EUROPEAN POLYMER JOURNAL, 1975, 11 (01) :85-89
[9]   PHOTOINITIATED OXIDATION OF POLYETHYLENE EFFECT OF PHOTO-SENSITIZERS [J].
AMIN, MU ;
SCOTT, G .
EUROPEAN POLYMER JOURNAL, 1974, 10 (11) :1019-1028
[10]  
BRUBAKER MM, 1950, Patent No. 2495286