Free radical graft polymerization and copolymerization at higher temperatures

Russell, K. E.

doi:10.1016/s0079-6700(02)00007-2

Cited by 199 publications

(136 citation statements)

References 48 publications

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“…29 Free radicals produced from thermal decomposition of a peroxide abstract hydrogen atoms from polyethylene backbones, thus polymer free radicals are resulted. Polymer radicals then attack monomer(MAH) and then results in grafting of monomer to polymer backbones.…”

Section: ⅲ Results and Discussionmentioning

confidence: 99%

“…were also examined and intensified mainly by surface grafting reactions. 1,2 Through the interfacial interaction between the components in polymeric materials PP-g-MAH or PE-g-MAH has been widely used for improving of the physical properties. 3~5 By utilizing of melts, 6~8 solution 9~11 and solid-state 12~14 modifying of polyolefins has been successfully performed.…”

Section: ⅰ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modification and Properties of Polyolefin with Maleic Anhydride as a Functional Monomer

Mo¹,

Lee²,

Choi³

et al. 2012

Elastomers and Composites

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ABSTRACT：Surface modification of macromolecules renders a progressive and favorable method to enhance the properties of polymeric materials and improves conductivity, wettability, stability, adhesion, antibacterial properties, etc. of polymeric surfaces without deterioration of the polymer bulk properties. Polyolefins such as polyethylene and polypropylene were grafted with maleic anhydride(MAH) as a functional monomer in solution. Evidence for grafting was shown with FTIR measurement. The grafting ratio was determined from chemical titration. The higher MAH loading, the lower contact angle() was obtained. With the increasing content of MAH, melting temperature(Tm) of maleic anhydride grafted polymer decreased while decomposition temperature(Td) of maleic anhydride grafted polymer increased.

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Section: ⅲ Results and Discussionmentioning

confidence: 99%

Section: ⅰ Introductionmentioning

confidence: 99%

Modification and Properties of Polyolefin with Maleic Anhydride as a Functional Monomer

Mo¹,

Lee²,

Choi³

et al. 2012

Elastomers and Composites

View full text Add to dashboard Cite

show abstract

“…2. Common initiators employed for the generation of free radicals and with considerable success include ammonium persulfate, potassium persulfate, ceric ammonium nitrate, dibenzoyl peroxide, and azobisisobutyronitrile at temperatures up to 80°C (54,59). As with any manufacturing technique, lower temperatures are often preferred as it provides a cost-effective method of production considering heating is an extremely expensive procedure.…”

Section: Photo-initiated Graftingmentioning

confidence: 99%

A Review of Polymeric Refabrication Techniques to Modify Polymer Properties for Biomedical and Drug Delivery Applications

et al. 2013

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Abstract. Polymers are extensively used in the pharmaceutical and medical field because of their unique and phenomenal properties that they display. They are capable of demonstrating drug delivery properties that are smart and novel, such properties that are not achievable by employing the conventional excipients. Appropriately, polymeric refabrication remains at the forefront of process technology development in an endeavor to produce more useful pharmaceutical and medical products because of the multitudes of smart properties that can be attained through the alteration of polymers. Small alterations to a polymer by either addition, subtraction, self-reaction, or cross reaction with other entities have the capability of generating polymers with properties that are at the level to enable the creation of novel pharmaceutical and medical products. Properties such as stimuli-responsiveness, site targeting, and chronotherapeutics are no longer figures of imaginations but have become a reality through utilizing processes of polymer refabrication. This article has sought to review the different techniques that have been employed in polymeric refabrication to produce superior products in the pharmaceutical and medical disciplines. Techniques such as grafting, blending, interpenetrating polymers networks, and synthesis of polymer complexes will be viewed from a pharmaceutical and medical perspective along with their synthetic process required to attain these products. In addition to this, each process will be evaluated according to its salient features, impeding features, and the role they play in improving current medical devices and procedures.

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“…[12][13][14] Free radical grafting of maleic anhydride (MA) onto polyolefins has gained wide industrial application. [15][16][17] MA modified polyolefins are an essential part of many plastics formulations. They are used as chemical coupling agents, impact modifiers, and compatibilisers for blends and filler reinforced systems.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Polyolefin Graft Polymer available as a Primer for Polyurethane Adhesive (I) Synthesis of polyolefins with cyclic acid anhydride by free radical graft polymerization

Ryu¹,

Kim²,

Min³

et al. 2015

Elastomers and Composites

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Because of their low surface free energy and absence of polar groups at the surface, polyolefins are substrates whose wetting and adhesion are very difficult. Free radical grafting of monomers to backbone polymer is one of the most attractive ways for the chemical modification of polymers. Synthesis of graft copolymer through graft polymerizations of PE and/or PP with phthalic anhydride (PhAn) was made and FTIR spectra of the graft polymer were the examined. And also the effects of phthalic anhydride content on the grafting ratio, thermal properties and contact angle of the graft polymer were examined.

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Free radical graft polymerization and copolymerization at higher temperatures

Cited by 199 publications

References 48 publications

Modification and Properties of Polyolefin with Maleic Anhydride as a Functional Monomer

Modification and Properties of Polyolefin with Maleic Anhydride as a Functional Monomer

A Review of Polymeric Refabrication Techniques to Modify Polymer Properties for Biomedical and Drug Delivery Applications

Preparation and Properties of Polyolefin Graft Polymer available as a Primer for Polyurethane Adhesive (I) Synthesis of polyolefins with cyclic acid anhydride by free radical graft polymerization

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