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Polyaniline modified mesoporous titanium dioxide that enhances oxo‐biodegradation of polyethylene films for agricultural plastic mulch application
Author(s) -
Xu Jiezhen,
Wang Xiao,
Yuan Xiaoming,
Tao Junjie,
Peng Shujing,
Yang Wei,
Dong Xianming,
Zhang Chaoqun,
Luo Ying
Publication year - 2019
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5822
Subject(s) - low density polyethylene , materials science , photocatalysis , titanium dioxide , polyethylene , biodegradation , chemical engineering , polyaniline , mesoporous material , nanocomposite , composite material , nuclear chemistry , polymer , organic chemistry , chemistry , catalysis , engineering , polymerization
Mesoporous titanium dioxide (M‐TiO 2 ) nanoparticles were successfully prepared followed by chemical modification with different contents of polyaniline (PANI/M‐TiO 2 ) and were used to accelerate the photo‐oxidation and biodegradation process of low‐density polyethylene (LDPE) film. The influence of these additives as a pro‐oxidant additive on the accelerated degradation of LDPE was investigated by photocatalytic oxidation under UV light irradiation and biodegradation with fungal strains. It was found that the as‐prepared PANI modified M‐TiO 2 particles exhibited an obvious light response from 400 to 800 nm which can improve the utilization of solar light. Compared with M‐TiO 2 , PANI/M‐TiO 2 exhibited better photocatalytic performance when irradiated under UV light and the subsequent biodegradation efficiency was enhanced. Enhancement of the photocatalytic performance of PANI/M‐TiO 2 could be attributed to good dispersibility and compatibility of PANI/M‐TiO 2 in the LDPE matrix, a narrow band gap, effective separation of photogenerated electron–hole pairs and the chromophoric group of PANI which was used as a photosensitizer in the LDPE/PANI/M‐TiO 2 composite film. © 2019 Society of Chemical Industry