Study on the Shape Memory Effect of Styrene Copolymer
This paper is concerned about the synthesis of shape memory styrene copolymer and the investigation of the influence of cross-linking degree on its shape memory effect. The influence of cross-linking degree on shape memory effect of styrene copolymer was investigated through altering the dosage of cross-linking agent. The Tg increased from 65 to 80.7 with the gel content increase from 35% to 80% which is achieved by increasing the dosage of cross-linking agent from 1% to 4%. Moreover, the SMP experienced good SME and the largest reversible strain of the SMP reached as high as 150%. When the copolymer was heated above Tg+30 (different copolymers performed different Tg), the shape recovery speed of the copolymers increased with the gel content increase.
Xianghua Liu, Zhengyi Jiang and Jingtao Han
D. W. Zhang et al., "Study on the Shape Memory Effect of Styrene Copolymer", Advanced Materials Research, Vols. 148-149, pp. 1464-1468, 2011