Preparation of isocyanate microcapsules by interfacial polymerization/in-situ polymerization and their application in wood adhesives

Ma, Yi; Song, Jixuan; Jiang, Yan; Zhang, Yanhua; Gu, Jiyou

doi:10.1080/00218464.2021.1988939

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…Bio-active hydrogel dressing can significantly shorten wound healing time by inhibiting infection, stimulating cell migration and proliferation, and promoting wound angiogenesis [30]. Hydrogel wound dressing also have strong drainage, anti-nonspecific protein properties [31].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Effect of a New Fully Biodegradable External Dressing for Promoting Diabetic Ulcerative Wound Healing

Li,

Fan,

Liang

et al. 2024

BIO Web Conf.

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In order to verify the effect of the new fully biodegradable external dressing on the repair of diabetes skin wounds and the promotion of wound healing, this study applied sodium alginate hydrogel dressing products which are supplemented with phage and conotoxin analgesic peptides to the skin lesions of diabetes mice, and comprehensively used the quantitative measurement of serological indicators, Image J Tissue section and other techniques to evaluate the effect of the new hydrogel dressing on the repair of diabetes wounds and the promotion of wound healing. The behavioral observation and analysis of mice did not show obvious regularity and difference. According to the results of serum cytokine analysis, functional hydrogel dressings can promote cell regeneration and wound healing in mice. Image J software analysis showed that the healing results of the experimental group were better than those of the negative control group, and the percentage of collagen fiber content showed an upward trend. Through comprehensive evaluation, it can be observed that the new fully biodegradable external dressing has obvious positive effects on wound healing, collagen fiber reconstruction and wound infection prevention of diabetes. The new biodegradable dressing not only promotes wound healing but also solves environmental pollution problems. It meets the sustainable development needs of society and has broad application prospects.

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Section: Discussionmentioning

confidence: 99%

Evaluation of the Effect of a New Fully Biodegradable External Dressing for Promoting Diabetic Ulcerative Wound Healing

Li,

Fan,

Liang

et al. 2024

BIO Web Conf.

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“…Microencapsulation is a procedure that has gained notoriety over time and affords some measure of protection in handling hazardous materials, such as isocyanates. The shielding effect of microcapsules (MCs) can greatly improve the protection of isocyanate, which is essential for storage and transportation [ 6 ]. Currently, microencapsulation is used in numerous industrial sectors, such as the pharmaceutical, food, textile, cosmetics, and adhesive industries [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…The shielding effect of microcapsules (MCs) can greatly improve the protection of isocyanate, which is essential for storage and transportation [ 6 ]. Currently, microencapsulation is used in numerous industrial sectors, such as the pharmaceutical, food, textile, cosmetics, and adhesive industries [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. Depending on the shell material, the encapsulated compounds are protected from light, humidity, and interactions with other substances.…”

Section: Introductionmentioning

confidence: 99%

Biodegradable Microcapsules of Poly(Butylene Adipate-co-Terephthalate) (PBAT) as Isocyanate Carriers and the Effect of the Process Parameters

et al. 2023

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Poly(butylene adipate-co-terephthalate) (PBAT), a biodegradable flexible, and tough polymer is herein used, for the first time, to encapsulate and protect isocyanate derivatives. Isocyanates are essential building blocks widely employed in the chemical industry for the production of high-performing materials. Microencapsulation of isocyanates eliminates the risks associated with their direct handling and protects them from moisture. In light of this, and having in mind eco-innovative products and sustainability, we present a straightforward process to encapsulate isophorone diisocyanate (IPDI) using this biodegradable polymer. Spherical and core-shell microcapsules (MCs) were produced by an emulsion system combined with the solvent evaporation method. The MCs present a regular surface, without holes or cracks, with a thin shell and high isocyanate loadings, up to 79 wt%. Additionally, the MCs showed very good isocyanate protection if not dispersed in organic or aqueous solutions. Effects of various process parameters were systematically studied, showing that a higher stirring speed (1000 rpm) and emulsifier amount (2.5 g), as well as a smaller PBAT amount (1.60 g), lead to smaller MCs and narrower size distribution.

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“…As the steric hindrance caused by the tight packing of molecules limits the conversion of spiropyran configurations, spiropyran is usually dissolved in organic solvents or composited with polymer matrices to enhance the coloration performance 11–13 . The microencapsulation of organic photochromic solution could shield acid, base, and oxygen for a stable solvent environment, slightly block UV and heat for higher anti‐fatigue property, 14–16 and pack organic photochromic solution into solid powders for easier storage 17 …”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13] The microencapsulation of organic photochromic solution could shield acid, base, and oxygen for a stable solvent environment, slightly block UV and heat for higher anti-fatigue property, [14][15][16] and pack organic photochromic solution into solid powders for easier storage. 17 The interfacial polymerization method is widely applied to the microencapsulation of liquid cores. The monomers, initiators, and catalyzers are dissolved separately in continuous and dispersed phases, leading to reactions at the interface of the two phases and the formation of the microcapsule shell.…”

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confidence: 99%

Photochromic performance optimization of polyurethane microcapsules by interfacial polymerization method

Yang,

Yu,

Han

et al. 2023

J of Applied Polymer Sci

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Spiropyran photochromic materials have been widely studied in military camouflage, optical data storage, information encryption, and fashion ornaments. The non‐photochromism and low endurance of solid spiropyran make the challenges of their application. Photochromic microcapsules with a butyl acetate solution of spiropyran as core and polyurethane as shell are synthesized via interfacial polymerization. The optimized polyurethane photochromic microcapsules are prepared with a Tween 20 concentration of 4 wt%, core–shell ratio of 16:5, and spiropyran concentration of 0.40 wt%. Polyurethane photochromic microcapsules with a mean particle diameter of 0.33 μm are obtained. The morphology shows smooth spheres, and the core–shell structure is observed. Butyl acetate in the microcapsule core does not evaporate at a temperature lower than 218.01°C as the microcapsule shell insulates heat. The polyurethane photochromic microcapsules are mixed with adhesive, thickener, and water into a paste and screen‐printed on cotton fabric. The printed fabric shows the ΔE of 17.56, 11.93, and 6.96 after 80s irradiation with the xenon lamp intensity of 102, 68, and 34 mW cm−2. The light stability of the photochromic fabric is excellent as ΔE decreases about 8.28% after 20 cycles of UV‐Vis irradiation.

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Preparation of isocyanate microcapsules by interfacial polymerization/in-situ polymerization and their application in wood adhesives

Cited by 9 publications

References 26 publications

Evaluation of the Effect of a New Fully Biodegradable External Dressing for Promoting Diabetic Ulcerative Wound Healing

Evaluation of the Effect of a New Fully Biodegradable External Dressing for Promoting Diabetic Ulcerative Wound Healing

Biodegradable Microcapsules of Poly(Butylene Adipate-co-Terephthalate) (PBAT) as Isocyanate Carriers and the Effect of the Process Parameters

Photochromic performance optimization of polyurethane microcapsules by interfacial polymerization method

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