Alternating Addition Copolymerizations

Trivedi, B. C.; Culbertson, B. M.

doi:10.1007/978-1-4757-0940-7_10

Cited by 8 publications

(3 citation statements)

References 544 publications

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“…Glycolysis was employed to synthesise pre-polymerized UPR, as has been done in prior studies. Soft drink bottle PET flakes and a 4-stage procedure were used to produce this product [17][18][19][20]. To begin with, PET flakes were depolymerized using the glycolysis process in a Syria Vessel type reactor, which was combined with mechanical stirrer for two hours at 200 °C to produce bis (2hydroxy propyl terephthalate) (BHPT).…”

Section: Pre-polymerization Of Uprmentioning

confidence: 99%

Investigation of Mechanical and Physical Behaviours of Polyester Resin Matrix from Recycled Polyethylene Terephthalate with Bamboo Fibre

Kaliappan

Govindarajan

Kumar

et al. 2022

Advances in Materials Science and Engineering

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In this research article, we investigate the physical and mechanical properties of composites comprised of unsaturated polyester resin (UPR) and recycled polyethylene terephthalate (PET) with 10% to 40% volume of bamboo fibre (BF). Chemical evaluation of BF revealed that BF has a cellulose content of 49.86%, hemicellulose content of 25.17%, and lignin content of 7.14%. As the UPR’s different connections, FTIR identified an interconnecting framework between the styrene monomer (ST) and the unsaturated polyester (UP). It was found by TGA-DTG that there were two breakdown phases. UPR’s physical and mechanical properties were found to be affected by increasing the amount of fibre in the material, with the water absorption rising from 0.7% to 2.81% and the density (1214.38 to 1168.83 kg/m), flexural strength (51.81 to 28.92 MPa), flexural modulus (2.78 to 2.83 GPa), and tensile strength (9.71 to 3.86 MPa) all decreasing at the same time. On the other hand, the hardness increased from 82.4 Shore D to 67.9 Shore D. Fibre distribution flaws in the UPR were found, affecting the composites' mechanical characteristics. By repurposing two waste products, this study helps create new materials that are better for the surroundings.

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Section: Pre-polymerization Of Uprmentioning

confidence: 99%

Investigation of Mechanical and Physical Behaviours of Polyester Resin Matrix from Recycled Polyethylene Terephthalate with Bamboo Fibre

Kaliappan

Govindarajan

Kumar

et al. 2022

Advances in Materials Science and Engineering

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“…23,24 Furthermore, the facile functionalization of MAnh moieties offers an efficient way to prepare functional materials of high sequence control and high density and distribution of the grafted functionalities. 25 Alternating poly(Sty-alt-MAnh) (PSMA) materials have been synthesized on an industrial scale by free-radical polymerization since the 1940s, and their derivatives are commonly used in applications such as rheology modifiers, plasticizers, polymeric surfactants, and pigment dispersants. 26 Their advantageous mechanical and thermal properties, high chemical resistance, and high degree of functionality are regularly described in scientific and technical reviews.…”

Section: ■ Introductionmentioning

confidence: 99%

“…These examples of nongrafted copolymers show the importance of controlling monomer distribution to tune the physicochemical properties of copolymers. Due to the donor–acceptor effect and a high rate coefficient of cross-propagation ( k cp ), the radical copolymerization of styrene (Sty) and maleic anhydride (MAnh) is a unique combination that offers sequence-controlled copolymers (alternating). , Furthermore, the facile functionalization of MAnh moieties offers an efficient way to prepare functional materials of high sequence control and high density and distribution of the grafted functionalities . Alternating poly(Sty- alt -MAnh) (PSMA) materials have been synthesized on an industrial scale by free-radical polymerization since the 1940s, and their derivatives are commonly used in applications such as rheology modifiers, plasticizers, polymeric surfactants, and pigment dispersants .…”

Section: Introductionmentioning

confidence: 99%

Influence of Grafting Density and Distribution on Material Properties Using Well-Defined Alkyl Functional Poly(Styrene-co-Maleic Anhydride) Architectures Synthesized by RAFT

et al. 2019

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Preparation of an acrylic-grafted polyester and its aqueous dispersion: Grafting utilizing alternating copolymerization

Shimizu

Higashiura

Ohguchi

1999

J. Appl. Polym. Sci.

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An investigation was undertaken to develop a new method to obtain fine dispersion of grafted polyester without gelation. As a new method, grafting utilizing alternating copolymerization of hydrophilic polymers to unsaturated polyester was discussed. By use of grafting utilizing alternating copolymerization, the reaction tendency of grafted polymer radical for an unsaturated bond of the polyester was changed. The grafting utilizing alternating copolymerization was compared with the conventional grafting, and the calculated grafting efficiency is about twice. Moreover, it was possible to increase the incorporation of less reactive monomers into the grafted side chain by the grafting utilizing alternating copolymerization. From the above results, the grafting utilizing alternating copolymerization is considered a useful method to prepare grafted polymers.

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Alternating Addition Copolymerizations

Cited by 8 publications

References 544 publications

Investigation of Mechanical and Physical Behaviours of Polyester Resin Matrix from Recycled Polyethylene Terephthalate with Bamboo Fibre

Investigation of Mechanical and Physical Behaviours of Polyester Resin Matrix from Recycled Polyethylene Terephthalate with Bamboo Fibre

Influence of Grafting Density and Distribution on Material Properties Using Well-Defined Alkyl Functional Poly(Styrene-co-Maleic Anhydride) Architectures Synthesized by RAFT

Preparation of an acrylic-grafted polyester and its aqueous dispersion: Grafting utilizing alternating copolymerization

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