Polyaniline modified mesoporous titanium dioxide that enhances oxo‐biodegradation of polyethylene films for agricultural plastic mulch application. Issue 7 (25th April 2019)

• Record Type: Journal Article
• Authors: Xu, Jiezhen; Wang, Xiao; Yuan, Xiaoming; Tao, Junjie; Peng, Shujing; Yang, Wei; Dong, Xianming; Zhang, Chaoqun; Luo, Ying
• Is Part Of: Polymer international. Volume 68:Issue 7(2019)
• Page Start: 1332
• Page End: 1340
• Publication Date: 2019-04-25
• Subjects: low‐density polyethylene -- mesoporous titanium dioxide -- polyaniline -- modification -- oxo‐biodegradation; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1002/pi.5822
• Languages: English
• ISSNs: 0959-8103

Abstract

Abstract: Mesoporous titanium dioxide (M‐TiO2 ) nanoparticles were successfully prepared followed by chemical modification with different contents of polyaniline (PANI/M‐TiO2 ) 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‐TiO2 particles exhibited an obvious light response from 400 to 800 nm which can improve the utilization of solar light. Compared with M‐TiO2, PANI/M‐TiO2 exhibited better photocatalytic performance when irradiated under UV light and the subsequent biodegradation efficiency was enhanced. Enhancement of the photocatalytic performance of PANI/M‐TiO2 could be attributed to good dispersibility and compatibility of PANI/M‐TiO2 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‐TiO2 composite film. © 2019 Society of Chemical Industry Abstract : Mesoporous titanium dioxide nanoparticles were successfully prepared and further modified with polyaniline as the composite catalyst to accelerate the oxo‐biodegradation of polyethylene films.