皮革废料的可持续利用：一种新型水性聚氨酯增强胶原水解物基功能性纸张内施胶剂,ACS Sustainable Chemistry & Engineering

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皮革废料的可持续利用：一种新型水性聚氨酯增强胶原水解物基功能性纸张内施胶剂
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2022-08-03 , DOI: 10.1021/acssuschemeng.2c03867
Mao Yang ₁ , Lang Rui ₁ , Yuhan Lu ₁ , Wenjia Han ₁ , Xugang Dang _{1,

2}

Affiliation

功能性造纸助剂在多用途纸中的应用潜力巨大。本研究首先通过乙烯基单体改性的胶原蛋白水解物和水性聚氨酯（WPU）的自由基乳液聚合制备了一种基于水性聚氨酯接枝胶原蛋白水解物（WPUC）的功能性纸张内施胶剂。然后，制备的 WPUC 用作手抄纸可持续加工和制造的内部施胶剂。FTIR、XRD、DSC 和其他分析技术用于表征 WPUC 内部施胶对手抄纸的行为和影响。研究发现，手抄纸的拉伸系数、撕裂系数、抗折性、Cobb ₆₀分别达到55.8 Nmg ^–1、1.9 mN.m当 WPUC 施胶剂在纸浆中的含量为 2% 时，分别为 2 .g ^–1、¹²倍和 190 g/m ^{2 。}此外，当纸浆中加入沉淀碳酸钙（PCC）和WPUC时，PCC的保留率可以大大提高，而不会影响成品纸的机械性能。具体而言，在造纸中PCC用量为25%和50%时，WPUC施胶剂手抄纸的PCC保留率分别相应提高了139.2%和174.5%。此外，手抄纸具有良好的耐水性。结果表明，WPUC有望用作新型纸张内施胶剂，以进一步提高纸张性能并降低生产成本。

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Sustainable Utilization of Leather Wastes: A Novel Waterborne Polyurethane-Reinforced Collagen Hydrolysate-Based Functional Paper Internal Sizing Agent

Functional papermaking additives have tremendous potential for application in multipurpose paper. In this research, a functional paper internal sizing agent based on waterborne polyurethane-grafted collagen hydrolysate (WPUC) was first prepared via free-radical emulsion polymerization of vinyl monomer-modified collagen hydrolysate and waterborne polyurethane (WPU). Then, the prepared WPUC was used as an internal sizing agent for sustainable processing and manufacturing of the handsheets. FTIR, XRD, DSC, and other analytical techniques were used to characterize the behavior and effects of WPUC internal sizing on the handsheets. The research found that the tensile coefficient, the tear coefficient, the folding resistance, and Cobb₆₀ of the handsheets reached 55.8 N.m.g^–1, 1.9 mN.m².g^–1, 12 times, and 190 g/m², respectively, when the WPUC sizing agent was 2% in the pulp. In addition, when the precipitated calcium carbonate (PCC) and WPUC were incorporated in the pulp, the retention rate of PCC could be greatly increased without affecting the mechanical properties of the finished paper. Specifically, when the PCC dosages were 25 and 50% in the papermaking, the PCC retention rate of handsheets with the WPUC sizing agent increased correspondingly by 139.2 and 174.5%, respectively. Moreover, the handsheets had good water resistance. The results indicate that the WPUC is expected to be used as a novel paper internal sizing agent to further improve the paper performance as well as lower the production costs.

更新日期：2022-08-03

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