Novel bio-based filler: hyperbranched polymer modified leather buffing dust and its influence on the porous structure and mechanical properties of polyurethane film

Liu, Jie; Zhang, Feifei; An, Zhendi; Shi, Wanpeng; Li, Hong

doi:10.1039/d1ra04057j

Cited by 5 publications

(4 citation statements)

References 22 publications

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“…The driving force of the displacement process is the concentration difference, with DMF and H 2 O moving from high concentration to low concentration. 27 When DMF diffused from PUS, PU chains changed from stretch state to curl state, PU resin changed from liquid state to gel state, and finally to solid state. 43 To counteract the shrinkage of the molecular chain, the formation of micropores is used to supplement this volume reduction.…”

Section: Morphology Observationmentioning

confidence: 99%

“…The whole glass was placed in the water bath at a constant speed and a fixed angle. According to some coagulation processes of WPL, 8,9,27,28 the process in this study is as follows: the film was first immersed in a water bath at 25 C for 10 minutes, then immersed in a water bath at 60 C for 30 min, and finally the washed film was dried at 80 C for 1 h to obtain WPL.…”

Section: Preparation Of Wet-type Polyurethane Leathermentioning

confidence: 99%

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Preparation of modified CO₂‐based polyurethane for wet‐type artificial leather with excellent alkali resistance

He,

Huang,

Chen

et al. 2023

J of Applied Polymer Sci

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Poly (propylene carbonate) diol (PPCD) is one of the most attractive CO2 copolymers. PPCD‐based polyurethane has excellent mechanical properties and hydrophilicity, and is widely used in various fields. However, poor alkali resistance limits the application of PPCD‐based polyurethane in wet‐type artificial leather (WPL). In order to solve this problem, polyurethane solution (PUS) for wet‐type artificial leather was prepared by using PPCD and polytetramethylene ether glycol (PTMG) as soft segments. The chemical structure, viscosity, molecular weight and distribution, physical and mechanical properties, thermal properties and dynamic mechanical thermal properties of PUS were characterized. The changes of the physical and mechanical properties of PUS films and surface morphology of WPLs after soaking in 10 wt% NaOH solution at room temperature for 24 h were studied, so as to evaluate the alkali resistance of polyurethane. The retention of tensile strength and tearing strength of PUS films modified by PTMG increased from 80% to 96% and from 89% to 100%, respectively. The scanning electron microscopy results showed that appropriate PTMG was beneficial to the formation of microporous structure for CO2‐based polyurethane leather. The leather without PTMG showed agglomeration phenomenon, the micropores were not obvious, and the changes were obvious after soaking in alkali solution. After being modified by PTMG, the morphology of leather after soaking in alkali solution was basically unchanged. Polyurethane leather prepared with PTMG and PPCD as soft segments has excellent alkali resistance. These results suggest that PPCD could be a potential artificial leather material.

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Section: Morphology Observationmentioning

confidence: 99%

Section: Preparation Of Wet-type Polyurethane Leathermentioning

confidence: 99%

Preparation of modified CO₂‐based polyurethane for wet‐type artificial leather with excellent alkali resistance

He,

Huang,

Chen

et al. 2023

J of Applied Polymer Sci

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“…To date, great progress has been made in the synthetic leather industry, which has undergone three transitions from earlier polyvinyl chloride (PVC) leather to polyurethane (PU) leather to recent microfiber leather. , With PU leather taken as an example, approximately 2 million tons of solvent-based PU is consumed annually for coating during the manufacturing process in China . However, the excessive utilization of organic solvents not only exacerbates carbon emissions and environmental pollution but also brings health harms to workers and nearby residents. ,− Moreover, the PU leather also heavily depends upon the petrochemical industry.…”

Section: Introductionmentioning

confidence: 99%

Water-Soluble, Self-Healing, and Debonding Primer for the Interface between Silicone Leather and Polydimethylsiloxane Composites

Chen,

Feng,

Guo

et al. 2024

Langmuir

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The exceptional hydrophobicity and antifouling properties of polydimethylsiloxane (PDMS) composites have attracted extensive interest as a result of low surface energy. However, PDMS composites are hardly bound by common primers, greatly limiting their practical applications. To address this issue, an EPMS/VTMS (EV) primer synthesized by hydrolytic polycondensation of 3-[(2,3)-epoxypropoxypropyl]methyldiethoxysilane (EPMS) and vinyltrimethoxysilane (VTMS) in acidic conditions is proposed. Interestingly, the EV primer exhibits exceptional reactivity, self-healing capabilities, and strong adhesion to various substrates, including metals, plastics, and glass. The bonding aluminum plates are easily debonded by immersion in water without any residue left. Subsequently, the EV primer has been applied to the interface between silicone leather and the PDMS composite. Results show that the bonding strength for the silicone leather coated with the EV/PDMS composite is 16 times higher than that of the silicone leather modified with the PDMS composite. Meanwhile, the modified silicone leather exhibits impressive antifouling performance, including aqueous and oily stains, appreciable breathability, and excellent wear resistance, even if suffering from 20 000 cycles of abrasion. These excellent advantages for the modified silicone leather should be attributable to the synergistic effect of the EV primer and the PDMS composite. These findings pave the way to develop an ecofriendly debonding primer for PDMS composites, greatly facilitating applications of silicone leather.

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“…Again, a new type of leather alternative, derived from food or industrial wastes, has captured the public attention via social media and the literature. Developments of leather alternatives may fall into the following categories [3]: 1. fibrous materials produced by microorganisms [4][5][6]; 2. replacing parts of synthetic coating materials (polyvinyl chloride (PVC) or polyurethane (PU)) with agricultural waste or plant-based materials [7][8][9]; and 3. coating a renewable, non-woven support with bio-based polymers [10,11]. Examples of these leather alternatives that have appeared in the media are Appleskin, which is made from apple scraps left over from the juicer process [12,13]; Desserto, made from dried cactus pulp [14]; Pinatex, made from pineapple leaves [15,16]; and Muskin, made from mushrooms [17].…”

Section: Introductionmentioning

confidence: 99%

Development of Green Leather Alternative from Natural Rubber and Pineapple Leaf Fiber

Duangsuwan,

Junkong,

Phinyocheep

et al. 2023

Sustainability

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In the present research, a plant-based leather substitute material or leather alternative was developed from natural rubber (NR) and pineapple leaf fiber (PALF) using a simple process. Pineapple leaf fiber was extracted from waste pineapple leaves using a mechanical method. Untreated PALF (UPALF) and sodium hydroxide-treated PALF (TPALF) were then formed into non-woven sheets using a paper making process. PALF non-woven sheets were then coated with compounded natural rubber latex at three different NR/PALF ratios, i.e., 60/40, 50/50, and 40/60. Epoxidized natural rubber with an epoxidation level of 10% (ENR) was used as an adhesion promoter, and its content was varied at 5, 10, and 15% by weight of the total rubber. The obtained leathers were characterized in terms of tensile properties, tear strength, and hardness. The internal structure of the leathers was observed with a scanning electron microscope. Comparison of these properties was made against those reported in the literature. It was found that the leather with NR/PALF equal to 50/50 was the most satisfactory; that prepared from TPALF was softer and had greater extension at break. With the addition of ENR at 5%, the stress-strain curve of each respective leather increased significantly, and as the amount of ENR was increased to 10 and 15%, the stresses at corresponding strains dropped to lower values but remained higher than that without ENR. PALF leather prepared in this study has comparable or better properties than other alternative leathers reported in the literature and is much stronger than that made from mushrooms. Thus, this type of leather alternative offers unique characteristics of being bio-based and having a lower carbon footprint.

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Novel bio-based filler: hyperbranched polymer modified leather buffing dust and its influence on the porous structure and mechanical properties of polyurethane film

Abstract: In this research, amino functional buffing dust (HBD) was used as an excellent biomass functional filler to improve the hygienic properties of synthetic leather, and provide a novel way for the treatment and disposal of leather buffing waste.

Cited by 5 publications

References 22 publications

Preparation of modified CO₂‐based polyurethane for wet‐type artificial leather with excellent alkali resistance

Preparation of modified CO₂‐based polyurethane for wet‐type artificial leather with excellent alkali resistance

Water-Soluble, Self-Healing, and Debonding Primer for the Interface between Silicone Leather and Polydimethylsiloxane Composites

Development of Green Leather Alternative from Natural Rubber and Pineapple Leaf Fiber

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Novel bio-based filler: hyperbranched polymer modified leather buffing dust and its influence on the porous structure and mechanical properties of polyurethane film

Abstract: In this research, amino functional buffing dust (HBD) was used as an excellent biomass functional filler to improve the hygienic properties of synthetic leather, and provide a novel way for the treatment and disposal of leather buffing waste.

Cited by 5 publications

References 22 publications

Preparation of modified CO2‐based polyurethane for wet‐type artificial leather with excellent alkali resistance

Preparation of modified CO2‐based polyurethane for wet‐type artificial leather with excellent alkali resistance

Water-Soluble, Self-Healing, and Debonding Primer for the Interface between Silicone Leather and Polydimethylsiloxane Composites

Development of Green Leather Alternative from Natural Rubber and Pineapple Leaf Fiber

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Product

Resources

About

Preparation of modified CO₂‐based polyurethane for wet‐type artificial leather with excellent alkali resistance

Preparation of modified CO₂‐based polyurethane for wet‐type artificial leather with excellent alkali resistance