Isothermal crystallization in polypropylene/ethylene–octene copolymer blends

Isothermal crystallization kinetics and spherulite morphologies of poly(lactic acid)/ethylene acrylate copolymer blends

“…The values of n for PLA and PLA/EAC blends varied between 2 and 3 at the different crystallization temperatures, suggesting that the crystallization of PLA may correspond to three‐dimensional truncated spherulitic growth with athermal nucleation . According to Svoboda et al ., the n values are not seriously affected by crystallization temperature. The rate constant k , on the other hand, is very affected by crystalline temperature.…”

“…This would reduce the number of available nucleation sites leading to a decrease in the nucleation rate of PLA. In addition, the large EAC domains also might act as hindrance to crystallization reducing the linear growth rate of PLA spherulites . The interactions between PLA and EAC probably become stronger with increasing EAC content and might have adversely affected chain diffusion and mobility of the crystallizable segments of PLA toward the growing spherulites and also the folding of the PLA chains onto the surface of the crystal nucleus .…”

“…In addition, the large EAC domains also might act as hindrance to crystallization reducing the linear growth rate of PLA spherulites . The interactions between PLA and EAC probably become stronger with increasing EAC content and might have adversely affected chain diffusion and mobility of the crystallizable segments of PLA toward the growing spherulites and also the folding of the PLA chains onto the surface of the crystal nucleus . The addition of high EAC content also might have increased the dilution effect on the crystallization of PLA at the spherulite growth front .…”

Isothermal Crystallization Kinetics of Quaternary Ammonium Group Grafted Polypropylene

“…[7][8][9][10][11] In this paper, the isothermal crystallization kinetics of a novel functional PP (FPP), i.e. methacryloxyethyltrimethyl ammonium chloride (DMC) grafted PP was investigated by differential scanning calorimetry (DSC).…”

Nonisothermal crystallization kinetics of AB2 hyperbranched polymer‐filled polypropylene

“…The effect of adding hyperbranched poly(ester amide) to polypropylene (PP) was investigated, and indeed it was found that the dyeability of PP fibers is highly improved without affecting other properties of the material . It had been known that the ultimate mechanical properties of blends or composites based on crystallizable polymers were determined in part by the crystallization behavior of their components []. The mechanism of the formation of fine structure during polymer crystallization has practical importance and it arises from the effect of crystallinity on both physical and chemical properties of polymer.…”