Enhancement of interfacial adhesion between polystyrene and styrene maleic anhydride random copolymer via reactive reinforcement
SCIE
SCOPUS
- Title
- Enhancement of interfacial adhesion between polystyrene and styrene maleic anhydride random copolymer via reactive reinforcement
- Authors
- Cho, KW; Seo, KH; Ahn, TO; Kim, J; Kim, KU
- Date Issued
- 1997-09
- Publisher
- ELSEVIER SCI LTD
- Abstract
- The effects of amine-terminated polystyrene (omega-amino-PS) of various molecular weights on the interfacial adhesion strength between polystyrene and styrene maleic anhydride (SMA) random copolymer have been investigated. The adhesive joint is composed of SMA and a blend of PS and omega-amino-PS, in which the omega-amino-PS acts as a reactive compatibilizer. Here, the amine end-group of omega-amino-PS in the PS/omega-amino-PS blend is known to react with the anhydride group of SMA and form an end-grafted copolymer, which acts as an interlinking molecule across an interface and improves the interfacial adhesion strength. The fracture toughness of the interface was measured using a modified double-cantilever beam fracture test. The enhancement of fracture toughness of the interface was evaluated as a function of molecular weight and content of omega-amino-PS, i.e. interlinking chain length and area density of interlinking molecules. The fracture toughness was found to increase with the amount of omega-amino-PS and then decreased or saturated at a certain content depending on the molecular weight of omega-amino-PS. When the molecular weight of omega-amino-PS was 26 000 (26 k), which is just above the entanglement molecular weight, there was an optimum content in reinforcing the interfaces due to the weak mechanical strength of 26 k omega-amino-PS. However, when the molecular weight was far above the entanglement molecular weight, i.e. 67k and 127k, the fracture toughness levelled off as the content of omega-amino-PS increased. At the same concentration of amine groups, 127k omega-amino-PS showed the highest fracture toughness. (C) 1997 Elsevier Science Ltd.
- Keywords
- adhesion; interface; reactive reinforcement; POLYMER BLENDS; COMPATIBILIZATION; FAILURE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21244
- DOI
- 10.1016/S0032-3861(97)00012-8
- ISSN
- 0032-3861
- Article Type
- Article
- Citation
- POLYMER, vol. 38, no. 19, page. 4825 - 4830, 1997-09
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- There are no files associated with this item.
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