Sustainable Block Copolymer-based Thermoplastic Elastomers
지속 가능한 블록 공중합체 기반 열가소성 탄성체

Jihoon Shin, Young-Wun Kim, Geon-Joong Kim
2014 Applied Chemistry for Engineering  
Block copolymers including ABA triblock architectures are useful as thermoplastic elastomers and toughened plastics depending on the relative glassy and rubbery content. These materials can be blended with other polymers and utilized as additives, toughening agents, and compatibilizers. Most of commercially available block copolymers are derived from petroleum. Renewable alternatives are attractive considering the finite supply of fossil resources on earth and the overall economic and
more » ... nomic and environmental expenses involved in the recovery and use of oil. Furthermore, tomorrow's sustainable materials are demanding the design and implementation with programmed end-of-life. The present review focuses on the preparation and evaluation of new classes of renewable ABA triblock copolymers and also emphasizes on the use of carbohydrate-derived poly(lactide) or plant-based poly(olefins) having a high glass transition temperature and/or high melting temperature for the hard phase in addition to the use of bio-based amorphous hydrocarbon polymers with a low glass transition temperature for the soft components. The combination of multiple controlled polymerizations has proven to be a powerful approach. Precision-controlled synthesis of these hybrid macromolecules has led to the development of new elastomers and tough plastics offering renewability, biodegradability, and high performance. of thermoplastics and the flexibility and extensibility of elastomeric materials, have found versatile applications in industry, including use in electronics, clothing, adhesives, and automotive components[1]. ABA triblock copolymers consisting of a soft segment between two hard segments are commercially available as TPEs. They have a microphase-separated morphology caused by an immiscible rubbery phase between two hard segments [2] . The application of triblock copolymers as TPEs requires careful control over their nanoscale structure. Given that the phase behavior of triblock copolymers has been well characterized [3] [4] [5] , desired mechanical properties can be achieved by tuning the molecular composition and architecture. 신지훈⋅김영운⋅김건중 공업화학, 제 25권 제 2 호, 2014
doi:10.14478/ace.2014-1025 fatcat:aomzluhnnffofa4qcyhdrfae6y