Thermal cross‐linking and anti‐meltdrop properties of copolyester containing phosphorus/magnesium salt composites by in situ polymerization

2021 ◽  
Author(s):  
Youxian Hu ◽  
Zhenlin Jiang ◽  
Min Zhu ◽  
Shiqiang Song ◽  
Liang Jin ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Magnesium Salt ◽  
Cross Linking

New Low Toxic Water-Soluble Monomers for Gelcasting of Ceramic Powders

2010 ◽  
Vol 62 ◽  
pp. 163-168 ◽  
Author(s):  
Mikolaj Szafran ◽  
Agnieszka Szudarska ◽  
Paulina Bednarek
Keyword(s):  
In Situ Polymerization ◽  
Polymer Network ◽  
Water Soluble ◽  
Cross Linking ◽  
Alumina Powder ◽  
Hydroxyl Groups ◽  
Ceramic Powders ◽  
Ceramic Slurry ◽  
Low Toxic

In this paper the two new low toxic water-soluble monomers: glycerol monoacrylate and 3-O-acrylic-D-glucose are introduced and their application in gelcasting of alumina powder is reported, in comparison with 2-hydroxyethyl acrylate, the commercial monomer. Both synthesized substances do not need an addition of cross-linking agent to the ceramic slurry, because hydrogen bonds can be formed in the polymer network, owing to the presence of two or more hydroxyl groups in their molecules, unlike in the case of 2-hydroxyethyl acrylate. Rheological behavior of alumina gelcasting suspensions containing these monomers has been studied, as well as the characteristics of raw and sintered elements formed from these slurries by initializing an in situ polymerization.

scholarly journals Preparation and thermal cross-linking mechanism of co-polyester fiber with flame retardancy and anti-dripping by in situ polymerization

RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 168-180
Author(s):  
Keyu Zhu ◽  
Zhenlin Jiang ◽  
Xiaotong Xu ◽  
Yun Zhang ◽  
Min Zhu ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
In Situ Polymerization ◽  
Polyester Fiber ◽  
Cross Linking

Scheme of proposed thermal cross-linking mechanism.

In situ polymerization of tropoelastin in the absence of chemical cross-linking

Biomaterials ◽  
2009 ◽  
Vol 30 (4) ◽  
pp. 431-435 ◽  
Author(s):  
Suzanne M. Mithieux ◽  
Yidong Tu ◽  
Emine Korkmaz ◽  
Filip Braet ◽  
Anthony S. Weiss
Keyword(s):  
In Situ Polymerization ◽  
Cross Linking ◽  
Chemical Cross Linking

scholarly journals In-Situ Polymerization of Maleic Acid in Presence of Aloe vera Gel for Development of Eco-Friendly Eri Silk based Handlooms

2021 ◽  
Author(s):  
Ashis Narayan Amita Banerjee ◽  
Abhijeet Majumdar ◽  
Dibyendu Bikash Datta ◽  
Debasish Das
Keyword(s):  
Carboxylic Acid ◽  
Maleic Acid ◽  
In Situ Polymerization ◽  
Aloe Vera ◽  
Environmentally Friendly ◽  
Cross Linking ◽  
Silk Fabric ◽  
Polycarboxylic Acids ◽  
Eri Silk

Abstract Polycarboxylic acid compounds such as butane-tetra-carboxylic acid, cyclopentane-tetra-carboxylic acid, and citric acid offer an environmentally friendly, non-toxic, and safe alternative to toxic formaldehyde condensate resin as a silk cross-linking agent. However, the sodium salts of phosphorus-containing mineral acids used as esterification catalysts with such polycarboxylic acids are not environmentally friendly because of their reported adverse effects on the aquatic environment and soil. Also, finishes based on such non-polymeric polycarboxylic acids cannot retain or improve the strength and moisture-regain characteristics of silk. Moreover, most polycarboxylic acids are too expensive for practical exploitation. In view of the above, the present work was aimed at establishing the optimum condition for the application of vinyl monomer containing carboxylic acid like maleic acid in presence of initiator and catalysts on silk fabric in the presence of ammonium persulphate as the free radical polymerization catalyst and trisodium citrate as the esterification catalyst. In this study, eri silk-based handloom fabrics were finished with Aloe vera gel and maleic acid as a cross-linking agent using the pad-dry-cure method. Water-soluble Aloe vera gel with varying concentrations of 5 to 15% (w/v) was also added in the finishing bath to add antibacterial activity to the fabric along with the anti-crease properties. Evaluation of attainable changes or improvements in the eri silk based handloom fabric properties in respect of tensile strength, wrinkle recovery, flexibility, antimicrobial, porosity and moisture regain on such treatments have been done. Besides this, changes in the chemical nature of silk fabric on such modifications have been studied by infrared (IR) spectroscopy and reported in this research article. The study proposes thermal curing system is conducive for in-situ polymerization of maleic acid in presence of Aloe vera for the development of eco-friendly eri silk based handlooms with antibacterial and anti-crease properties, without a significant loss in strength properties. The effects of the antimicrobial agent were assessed even after the 10 wash cycle.

Research on the Manufacturing Methods of Self-Healing Microcapsules in Advanced Materials

2014 ◽  
Vol 968 ◽  
pp. 44-48
Author(s):  
Jun Cong Liu ◽  
Dan Yong Wang ◽  
Yi Wei Chen ◽  
Shu Hu Li ◽  
Hua Zhen Wei
Keyword(s):  
In Situ Polymerization ◽  
Solvent Evaporation ◽  
Advanced Materials ◽  
Cross Linking ◽  
Self Healing ◽  
Solvent Evaporation Method ◽  
Evaporation Method ◽  
Manufacturing Methods ◽  
Matrix Polymerization

s: For the problem that cracks exist when the advanced materials are attacked or shocked, and the cracks are hard to self-healing. The microcapsules are put forward to make great effects on healing the cracks to some extents. The manufacturing methods of microcapsules are reviewed, including Matrix Polymerization, In-situ Polymerization, In-situ Cross-linking, Solvent Evaporation Method. And the conclusion and problems are prospected finally.

Improvement in mechanical, physical and biological properties of eucalyptus and pine woods by raw pine resin in situ polymerization

2021 ◽  
Vol 166 ◽  
pp. 113495
Author(s):  
Andrey Pereira Acosta ◽  
Kelvin Techera Barbosa ◽  
Sandro Campos Amico ◽  
André Luiz Missio ◽  
Rafael de Avila Delucis ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Biological Properties ◽  
Pine Resin

Juvenile and Mature Pinewoods Treated by in situ Polymerization with Poly(vinyl acetate)

2021 ◽  
Author(s):  
Andrey Acosta ◽  
Ezequiel Gallio ◽  
Paula Zanatta ◽  
Henrique Schulz ◽  
Rafael de Avila Delucis ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
In Situ Polymerization
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