2024
DOI: 10.1002/app.55525
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Effect of long‐chain branching structures on supercritical CO2 foaming behavior of iPB‐1 with different crystalline form ratios

Zheng Gong,
Weijie Li,
Yichong Chen
et al.

Abstract: To solve the poor cellular morphology of linear iPB‐1 during supercritical CO2 foaming, the modification and the special crystalline transition behavior of iPB‐1 were used to improve its foaming performance. Based on free radical polymerization, long‐chain branching iPB‐1 is achieved. Long‐chain branching structures not only reduce crystallinity of iPB‐1, but also increase the crystallization temperature. Long‐chain branching structures can accelerate the crystalline transformation rate of iPB‐1. After anneali… Show more

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“…Among these, foaming stands out as the initial and most frequently reported technique for fabricating porous SMPs . CO 2 foaming is appealing in the automotive sector, packaging industry, and other fields. Its nontoxicity, cost-effectiveness, nonflammability, and environmental friendliness make it highly attractive for a wide range of applications. Researchers have employed polymers such as polyether block amide (PEBA)/PLA, PLA/poly(methyl methacrylate) (PMMA), and thermoplastic polyurethane (TPU)/PLA to produce foams with high shape memory performance using the technique. ,, However, the shape memory switching temperature of foams cannot be adjusted, which limits their applications.…”
Section: Introductionmentioning
confidence: 99%
“…Among these, foaming stands out as the initial and most frequently reported technique for fabricating porous SMPs . CO 2 foaming is appealing in the automotive sector, packaging industry, and other fields. Its nontoxicity, cost-effectiveness, nonflammability, and environmental friendliness make it highly attractive for a wide range of applications. Researchers have employed polymers such as polyether block amide (PEBA)/PLA, PLA/poly(methyl methacrylate) (PMMA), and thermoplastic polyurethane (TPU)/PLA to produce foams with high shape memory performance using the technique. ,, However, the shape memory switching temperature of foams cannot be adjusted, which limits their applications.…”
Section: Introductionmentioning
confidence: 99%