Polystyrene photodegradation with a styrene block copolymer containing TiO₂ nanoparticle

详细信息    查看全文

• 作者：Hisayuki Nakatani ; ^{h-nakatani@nagasaki-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Genichiro Kawajiri ; Shiho Miyagawa ; Suguru Motokucho
• 关键词：Photodegradation ; TiO2 nanoparticle ; Styrene block copolymer
• 刊名：Polymer Degradation and Stability
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：130
• 期：Complete
• 页码：135-142
• 全文大小：1547 K

文摘

Polystyrene (PS) photodegradation with a novel poly(styrene-block-acrylic acid) (PS-b-PAA) containing TiO₂ nanoparticle photocatalyst was studied. The TiO₂ nanoparticle contained anatase phase and showed methylene blue photodecomposition activity. In particular, the higher molecular weight PS₇₃₆-b-PAA₁₂₉ photocatalyst had a high ability in the photodegradation and showed good dispersity in PS matrix. The PS composite film transparency was nearly equal to that of PS. The composite showed good PS photodegradation behavior under the UV irradiation. The chain scission preferentially occurred, leading to the decrease of PS molecular weight. In addition, an additional methyl linoleate (ML) component caused an improvement of the chain scission activity to the composite.