TY - GEN
T1 - Influence of radiation dose on shape memory effect of styrene copolymer
AU - Zhanga, Dawei
AU - Liuc, Yanju
AU - Leng, Jinsong
PY - 2009
Y1 - 2009
N2 - This paper is concerned about the influence of radialization dosage on performance of shape memory styrene copolymer. In this paper, the glass transition temperature (Tg) of styrene copolymer was measured by Dynamic Mechanical Analysis (DMA). The shape memory performance of styrene copolymer before and after radiation was also evaluated. Results indicated, the gel content of radiated styrene copolymer decreased by 14.3%, tensile strength reduced by 16.7% and slightly increase in elongation break. The storage modulus decrease sharply and the range of glass transition become narrower; the loss modulus reduces. In radiated styrene copolymer was not new peaks and the just height of the previous peaks varies in the spectra. It indicates, there are no oxidized reaction in the process of radiation. The shape recovery is conducted at different temperature for the SMP and radiated SMP. Below 85°C, the recovery speed of radiated SMP is faster than that of SMP without radiation. Above 85°C, the recovery speed of SMP is faster than that of radiated SMP. It can be explained as: after the radiation, the degradation of the polymer occurs, the chain of the molecule become shorter, the Tg decreases, and the storage modulus reduces consequently.
AB - This paper is concerned about the influence of radialization dosage on performance of shape memory styrene copolymer. In this paper, the glass transition temperature (Tg) of styrene copolymer was measured by Dynamic Mechanical Analysis (DMA). The shape memory performance of styrene copolymer before and after radiation was also evaluated. Results indicated, the gel content of radiated styrene copolymer decreased by 14.3%, tensile strength reduced by 16.7% and slightly increase in elongation break. The storage modulus decrease sharply and the range of glass transition become narrower; the loss modulus reduces. In radiated styrene copolymer was not new peaks and the just height of the previous peaks varies in the spectra. It indicates, there are no oxidized reaction in the process of radiation. The shape recovery is conducted at different temperature for the SMP and radiated SMP. Below 85°C, the recovery speed of radiated SMP is faster than that of SMP without radiation. Above 85°C, the recovery speed of SMP is faster than that of radiated SMP. It can be explained as: after the radiation, the degradation of the polymer occurs, the chain of the molecule become shorter, the Tg decreases, and the storage modulus reduces consequently.
KW - Radicalization dosage
KW - Shape memory effect
KW - Styrene copolymer
UR - https://www.scopus.com/pages/publications/67149087358
U2 - 10.1117/12.815696
DO - 10.1117/12.815696
M3 - 会议稿件
AN - SCOPUS:67149087358
SN - 9780819475497
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Behavior and Mechanics of Multifunctional Materials and Composites 2009
T2 - Behavior and Mechanics of Multifunctional Materials and Composites 2009
Y2 - 9 March 2009 through 12 March 2009
ER -