OBSERVATION OF NESTED-BANDED SPHERULITIES FROM POLY(ETHYLENE ADIPATE) SOLUTION VIA CONTROLLING SOLVENT EVAPORATION
Banding in polymer spherulites is a common occurrence and has been studied for more than half a century. The appearance of bands is generally proposed as a consequence of regular twisting of ribbon-like crystalline lamellae along the radial growth direction of the spherulites.1*2 However, Kyu3 et al., who, based on numerical calculation of the pattern formation using nonlinear diffusion equations, proposed that not only lamellar twisting, but also rhythmic crystal growth resulting from nonlinear diffusion during growth can induced the formation of the pattern. Indeed, spherulites without lamellar twisting exhibit banded features are observed from both polymer blends and homopolymers. Recently, by controlling the solvent evaporation rate during the PCL crystallization from solution, we obtained no-twisted and non-periodic twisted banded spherulites with radial periodic variation of thickness as well as traditional banded spherulites with periodic lamellar twisting4. In this report, a novel banded spherulite, including two kinds of banded patterns in one spherulite, was prepared by controlling solvent evaporation procedure from poly (ethylene adipate) (PEA) solution film.
Yiguo Li Zongbao Wang Tianbai He
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Chain
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
238-239
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）