The reactive compatibilization effect of copolymer macroactivator for immiscible anionic polyamide 6/polystyrene blends via <i>in situ</i> polymerization

Wang, Wenqi; Ying, Jia; Wang, Jikui

doi:10.1002/app.46302

Cited by 6 publications

(2 citation statements)

References 39 publications

(36 reference statements)

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“…The first technique refers to the use of a third component, usually a grafted or block copolymer obtained under a careful design and synthesis to be largely miscible with both components of the blend. These compatibilizers preferentially are located at the interface between the immiscible (or partially miscible) polymers allowing polymer-polymer interactions which can increase interfacial adhesion and morphological stability, thus improving the overall performance of the blend [40]. Some of these compatibilizers are obtained by grafting a highly reactive group, such as maleic anhydride, carboxylic acid, oxirane ring and acrylate group, into the main polymer backbone to provide dual functionality.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Impact Strength of Polylactide Blends with a Thermoplastic Elastomer Compatibilized with Biobased Maleinized Linseed Oil for Applications in Rigid Packaging

et al. 2021

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This research work reports the potential of maleinized linseed oil (MLO) as biobased compatibilizer in polylactide (PLA) and a thermoplastic elastomer, namely, polystyrene-b-(ethylene-ran-butylene)-b-styrene (SEBS) blends (PLA/SEBS), with improved impact strength for the packaging industry. The effects of MLO are compared with a conventional polystyrene-b-poly(ethylene-ran-butylene)-b-polystyrene-graft-maleic anhydride terpolymer (SEBS-g-MA) since it is widely used in these blends. Uncompatibilized and compatibilized PLA/SEBS blends can be manufactured by extrusion and then shaped into standard samples for further characterization by mechanical, thermal, morphological, dynamical-mechanical, wetting and colour standard tests. The obtained results indicate that the uncompatibilized PLA/SEBS blend containing 20 wt.% SEBS gives improved toughness (4.8 kJ/m2) compared to neat PLA (1.3 kJ/m2). Nevertheless, the same blend compatibilized with MLO leads to an increase in impact strength up to 6.1 kJ/m2, thus giving evidence of the potential of MLO to compete with other petroleum-derived compatibilizers to obtain tough PLA formulations. MLO also provides increased ductile properties, since neat PLA is a brittle polymer with an elongation at break of 7.4%, while its blend with 20 wt.% SEBS and MLO as compatibilizer offers an elongation at break of 50.2%, much higher than that provided by typical SEBS-g-MA compatibilizer (10.1%). MLO provides a slight decrease (about 3 °C lower) in the glass transition temperature (Tg) of the PLA-rich phase, thus showing some plasticization effects. Although MLO addition leads to some yellowing due to its intrinsic yellow colour, this can contribute to serving as a UV light barrier with interesting applications in the packaging industry. Therefore, MLO represents a cost-effective and sustainable solution to the use of conventional petroleum-derived compatibilizers.

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Section: Introductionmentioning

confidence: 99%

Improvement of Impact Strength of Polylactide Blends with a Thermoplastic Elastomer Compatibilized with Biobased Maleinized Linseed Oil for Applications in Rigid Packaging

et al. 2021

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“…Monomer cast nylon 6 (MC nylon 6), an important type of commercial nylon, is widely used in industrial and aerospace to replace the metallic materials . It possesses the advantages of high molecular weight, high crystallization, better mechanical strength, and excellent self‐lubricating performance.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous enhancements of mechanical and thermal properties of monomer cast nylon via polydimethylsiloxane‐modified kaolin

Ding

Wang

Ying³

et al. 2019

Polymer Composites

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Polydimethylsiloxane (PDMS)‐modified Kaolin was prepared by the reaction between kaolin and PDMS. MC nylon 6/kaolin and MC nylon 6/kaolin‐PDMS composites with different filler contents were prepared through in situ polymerization. Thermogravimetric analysis and differential scanning calorimetry analysis show that the feeding of kaolin improved thermal stability and crystallinity of nylon. When 1 wt% addition of kaolin‐PDMS, the tensile strength and impact strength of the as‐prepared composites reached a maximum value of 77.7 MPa and 4.5 kJ/m2, respectively, exhibiting remarkable mechanical properties. Meanwhile, the water absorption capacity of the as‐prepared composites was greatly reduced by 60% with the addition of kaolin, and the modified kaolin possesses even better performances. The results show that the treated kaolin can greatly enhance the properties of cast nylon and has an outstanding application prospect.

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Effect of varying polydimethylsiloxane chain length and content on the adhesion and thermal properties of polydimethylsiloxane‐grafted acrylic pressure‐sensitive adhesives

Park

Seo

Kwon

et al. 2021

J of Applied Polymer Sci

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Acrylic pressure-sensitive adhesive (acrylic PSA) has advantages such as high adhesion, low cost, and high light transmittance, but it has a low adhesion to low-surface-energy substrates and low thermal stability. To solve these problems, PSA was modified with low surface energy moieties and crosslinked by UV curing. In this study, a polydimethylsiloxane (PDMS) structure with a low surface energy and good thermal properties was introduced into PSA through grafting polymerization to compensate for the disadvantages of acrylic PSA. PDMSgrafted acrylic PSAs (PGPs) were synthesized by grafting through method using macromonomers with PDMS of three different lengths. They showed improved loop tack and 180 peel strength values on polypropylene, a low-surface-energy substrate. However, when a long PDMS-based macromonomer (M w $ 5000) was used, phase separation was observed even at a low concentration, and the degree of improvement was decreased. The peel strength of PGPs significantly changed with dwelling time. As the surface energy difference between the substrate and PSA increased, the peel strength increased dramatically with dwelling time. 90 peel strengths measured with varying temperature (25-100 C) showed that a long PDMS chain was most effective in improving the thermal stability of the acrylic PSA by its own domains.

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The reactive compatibilization effect of copolymer macroactivator for immiscible anionic polyamide 6/polystyrene blends via in situ polymerization

Cited by 6 publications

References 39 publications

Improvement of Impact Strength of Polylactide Blends with a Thermoplastic Elastomer Compatibilized with Biobased Maleinized Linseed Oil for Applications in Rigid Packaging

Improvement of Impact Strength of Polylactide Blends with a Thermoplastic Elastomer Compatibilized with Biobased Maleinized Linseed Oil for Applications in Rigid Packaging

Simultaneous enhancements of mechanical and thermal properties of monomer cast nylon via polydimethylsiloxane‐modified kaolin

Effect of varying polydimethylsiloxane chain length and content on the adhesion and thermal properties of polydimethylsiloxane‐grafted acrylic pressure‐sensitive adhesives

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