Leather and Synthetic Leather: A Mechanical Viewpoint for Sustainability

Mahmud, Jamaluddin; Yusop, Siti Hajar Mohd; Noor, Siti Noor Azizzati Mohd

doi:10.1201/9781315207322-9

Cited by 1 publication

(1 citation statement)

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“…Man-made leathers, fabricated by integrating polymer coating with fabric, have been widely applied in human lives, such as sofas, garments, bags, shoes, etc., because of their comparable properties to natural leathers [ 1 , 2 , 3 ]. According to the type of coating, man-made leathers can be divided into two categories: polyvinyl chloride (PVC) artificial leather and polyurethane (PU) synthetic leather [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

A Self-Matting Waterborne Polyurethane Coating for PVC Artificial Leather

Sun

Ren

et al. 2022

Polymers

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A type of polyester-based self-matting waterborne polyurethane (ESMWPU) with an excellent matte effect of 0.8° and transmittance of 78.5% for PVC artificial leather was synthesized. The influence of synthesis parameters, including R value, crosslinking and hydrophilic group content, on coating gloss and transmittance was investigated. Meanwhile, the properties necessary for applying water-based resins to plasticized PVC were detailed. The results demonstrated that R value, crosslinking degree and hydrophilic group content synergistically decided the morphological changes of latex particles during their film-forming process in three aspects: particle stiffness, three-dimensional structure and particle size, respectively. With optimized parameters of R = 1.9, TMP = 2 wt% and DMPA = 1.75 wt%, ESMWPU latex particles stabilized their spherical shapes without collapsing in the film-forming process and created a rough surface, resulting in a matte effect. In terms of application performance, good wetting and adhesion for ESMWPU to a plasticized PVC surface was achieved with a 2 wt% leveling agent load. Moreover, due to the high cohesion energy of ester bonds and intermolecular hydrogen bonds, this type of polyester-based ESMWPU also depicted admirable thermal adhesion resistance. All aforementioned results distinctly demonstrate a feasible yet promising paradigm for applying ESMWPU on PVC artificial leather.

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