Question

polymers with higher crystallinity exhibits reduced polymer chain mobility, consequently, have higher resistance to creep and stress relaxation

Answer 1

Thermal conductivity is significantly higher in crystalline polymers. The effects of crystallinity and fiber volume fraction on creep behavior are comparable.

Crystalline polymers are a significant class of engineered plastic materials used in both daily life and industrial applications. Fully crystalline polymers cannot be produced under typical processing conditions, unlike small molecular compounds like metals and organics. Semicrystalline polymers would be a more accurate description of crystalline polymers. As a result, semicrystalline polymers can exist in both crystalline and amorphous phases. Thermal conductivity is significantly higher in crystalline polymers. In comparison to their amorphous counterparts, crystalline regions pack much more neatly and securely into ordered structures, significantly reducing polymer chain mobility. Polymers with a high crystalline fraction have low creep and stress relaxation because the crystalline polymer chains cannot move independently. The effects of crystallinity and fiber volume fraction on creep behavior are comparable. Crescendo in a crystalline polymer.

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