Correction: Zhang et al. Biodegradable Starch/Chitosan Foam via Microwave Assisted Preparation: Morphology and Performance Properties. Polymers 2020, 12, 2612

Zhang, Xian; Teng, Zhuangzhuang; Huang, Runzhou; Catchmark, Jeffrey M.

doi:10.3390/polym14091691

Cited by 1 publication

(1 citation statement)

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“…This could be explained due to the reduced length of intercrosslink chains, which restrict the orientation of the stretched intercrosslink chains and also misalignment of the fractured surfaces during the healing process. 34 The lower healing efficiency at higher BIS A content could be due to the presence of excessive aryl disulfide groups, which remain unconsumed during vulcanization process. The presence of bulky aromatic groups of aryl disulfide between rubber macromolecular chains lower the cohesive forces between the polymer chains and limit the interchain diffusion as well recombination of thiyl radicals' chain end during healing thus sacrificed the self-healing capability of the material.…”

Section: Morphologymentioning

confidence: 99%

Self‐healing natural rubber based on dynamic disulphide exchange towards fatigue lifetime extension

Masraff

Thajudin

Othman

et al. 2022

J of Applied Polymer Sci

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Dynamic disulphide exchange mechanism was introduced to promote selfhealing characteristics to natural rubber compound and the corresponding healing mechanism and mechanical properties are presented. The formation of reversible dynamic disulphide bonds within rubber molecular chains was evidenced via FTIR and the total crosslink density of dynamic disulphide crosslinks was quantitatively measured by equilibrium swelling test. Scanning Electron Microscopy (SEM) results revealed that the healed area of the fractured surface adhered well with minor scar on the contact surface, suggesting that intermolecular diffusion occur at the fracture surface. It was also found that the tensile strength and tear strength of the broken samples able to recover 91% and 103%, respectively, under thermal healing at 150 C for 10 min. The fatigue lifespan of the materials increased 154.9% compared with the conventional rubber. The successful fabrication of self-healing natural rubber through dynamically reversible disulphide exchange mechanism would be expected to open up new opportunities for development of sustainable rubber products.

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Section: Morphologymentioning

confidence: 99%