Functionalization of Polymers by Hydrolysis, Aminolysis, Reduction, Oxidation, and Some Related Reactions

Hetemi, Dardan; Pinson, Jean

doi:10.1002/9783527819249.ch8

Cited by 5 publications

(6 citation statements)

References 111 publications

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“…The related literature is numerous, for only PET, it is more than 100 reports that due to space limitations cannot be considered in this report and it is the subject of another review paper 171 . The recently published book that discusses the methods and applications of surface modification of polymers, along with hydrolysis, oxidation, and so on, considered aminolysis as an interesting possibility for generating surface to be modified for special use and indicating its possible damages to the surface that should be prevented 172 …”

Section: Discussionmentioning

confidence: 99%

“…171 The recently published book that discusses the methods and applications of surface modification of polymers, along with hydrolysis, oxidation, and so on, considered aminolysis as an interesting possibility for generating surface to be modified for special use and indicating its possible damages to the surface that should be prevented. 172…”

Section: Discussionmentioning

confidence: 99%

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Aminolysis of polyesters for cracking and structure clarifying: A review

Rabiei

Kish

2022

Polymers for Advanced Techs

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Cracking of polyester bottles and recycling the waste, which is of concern in the current research works have their roots in the environmental stress cracking and the physical structural analysis, which has been the subject of a huge number of research reports, that are collected in the present review. Polyesters are polymers of high importance in industry and academia, and amines are versatile chemicals that are used for different purposes. The reaction of polyester with amines has been used to reveal structure, improve the properties of products, convert polyesters waste into benign materials, enhance biocompatibility, and so on. The research works reported on the aminolysis of polyesters (PET, PCL, PLA, PTT, PBT, PHB, PEN, PEA) for structure and morphological determination, etching, and stress cracking are critically reviewed. The chemistry and mechanism of the reactions of aminolysis of an ester or a polyester are well documented, and a vast amount of useful information is available. There is a need for further research to answer the remaining questions on the intermediates. Solutions of amines act as environmental stress‐cracking agents, may induce crystallization, and probably it can dissolve and remove a certain amount of disordered regions as well. In the subject of stress cracking that can help the elucidation of the process of aging, it is not yet clear how cracks patterns and sizes (from nano up to micro size) observed on the surface of polyester products depend on the thermal and mechanical history of the samples, and it is not known how to produce cracked patterns according to a pre‐planned design on the surfaces of polyester articles. To make polyesters more useful and safe the structure must be revealed in order to get benefit from the structure–property relations.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Aminolysis of polyesters for cracking and structure clarifying: A review

Rabiei

Kish

2022

Polymers for Advanced Techs

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“…It is presumed that the mild experimental condition (i.e., low concentration of ethylenediamine (6% w/v) and short reaction time) results in non-fractured but collapsed morphologies with increasing the averaging fiber diameter. During the aminolysis, the amorphous parts of PLCL collapsed, on the other hand, the crystalline parts kept aligned (Garkhal et al, 2007;Hetemi and Pinson, 2019;Vadas et al, 2020). These deformed parts of 5 A and 15 A were partially recovered with BSA immobilizations by the effect of a cross-linker, EDC.…”

Section: Physical Characteristics Of Plcl Membranesmentioning

confidence: 99%

Facile method for immobilization of protein on elastic nanofibrous polymer membranes

et al. 2023

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Surface modification of polymeric scaffolds for biomedical applications is a versatile and widely used method to improve interactions between scaffolds and cells. Specifically, chemical immobilization of proteins to polymeric scaffolds provides significant advantages such as stable and biocompatible properties, however, it generally requires expensive instruments or complex steps. In this study, the facile method is presented that changes poly (l-lactide-co-caprolactone) electrospun nanofibrous membranes to be cell-friendly and bioactive by chemical immobilization of proteins onto membranes. The model protein, bovine serum albumin was bound onto the nanofibrous membranes via aminolysis and subsequent covalent grafting. The surface modification effects of the nanofibrous membranes including surface morphologies, mechanical properties, and wettability were investigated. In addition, in vitro studies have demonstrated that adhesion and proliferation of human dermal fibroblasts are promoted in protein-immobilized membranes compared to bare nanofibrous membranes.

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“…A variety of techniques have been examined and different chemicals have been used for changes in the properties to suit the specific applications, some with success and some with less practical or commercial use. 5,6 For PET, probably the oldest one is the alkaline treatment that causes the chain shortening, and the generation of functional hydroxyl groups on the surface. For fabrics, alkaline treatment improves the handle, wettability, drape, resistance to abrasion, and so forth.…”

Section: Introductionmentioning

confidence: 99%

“…From another point of view, the surface modification of polymers including PET is growing to be used for novel products. A variety of techniques have been examined and different chemicals have been used for changes in the properties to suit the specific applications, some with success and some with less practical or commercial use 5,6 . For PET, probably the oldest one is the alkaline treatment that causes the chain shortening, and the generation of functional hydroxyl groups on the surface.…”

Section: Introductionmentioning

confidence: 99%

Modification of poly(ethylene terephthalate) fibers, fabrics, and films by amination reactions—A review

Rabiei,

Haghighat Kish

2024

Polymers for Advanced Techs

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Currently, many of our living facilities are dependent on poly(ethylene terephthalate) (PET). It is utilized in the production of textiles, beverage bottles, food packaging, implants, and so forth. Although PET has desirable properties, it has to be amended for certain applications that have been modified by different methods. For modifications, aminolysis is used by several investigators, and this report reviews critically the related literature. Amines can be applied to impart the desired properties and produce active sites to be used for further alterations by successive reactions. Amine treatments alone enhance wettability, increase dyeability, and most applicable, produce functionality on the surface. By further reactions with several other chemicals, a spectrum of properties was endowed to PET products, such as flame retarding, anti‐fouling property, highest hygroscopicity, silk‐like character, biocompatibility, and so forth. There are a large number of works, mainly to change the surface properties, but the literature on the in vivo or common everyday evaluation of the amended products is scarce. Most of the modifications of PET products by amines are accompanied by a decrease in some other properties. Then the process of aminolysis and modifications have to be optimized with respect to several production parameters.

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Functionalization of Polymers by Hydrolysis, Aminolysis, Reduction, Oxidation, and Some Related Reactions

Cited by 5 publications

References 111 publications

Aminolysis of polyesters for cracking and structure clarifying: A review

Aminolysis of polyesters for cracking and structure clarifying: A review

Facile method for immobilization of protein on elastic nanofibrous polymer membranes

Modification of poly(ethylene terephthalate) fibers, fabrics, and films by amination reactions—A review

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