Organoclay-reinforced dynamically vulcanized thermoplastic elastomers of polyamide-6/polyepichlorohydrin-co-ethylene oxide

Naderi, Ghasem

doi:10.1002/pc.23765

Cited by 3 publications

(2 citation statements)

References 46 publications

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“…This blending process allows the cross-linkable monomer phase to be gradually dispersed in the polymer matrix, and the reactive groups of monomers can react with the polymer matrix and with each other, improving the interfacial interaction, increasing miscibility, and forming the local cross-linked structure. [29][30][31][32][33][34] Therefore, the improved toughness is achieved while the rigidity of a polymer is maintained. Many studies have been conducted on toughening polylactide (PLA) by dynamic vulcanization because the inherent brittleness of PLA limits broad applications.…”

Section: Introductionmentioning

confidence: 99%

“…It involves the in‐situ cross‐linking reaction during melt blending. This blending process allows the cross‐linkable monomer phase to be gradually dispersed in the polymer matrix, and the reactive groups of monomers can react with the polymer matrix and with each other, improving the interfacial interaction, increasing miscibility, and forming the local cross‐linked structure 29–34 . Therefore, the improved toughness is achieved while the rigidity of a polymer is maintained.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of robust polyamide 6 with local cross‐linked structure via dynamic vulcanization

Ye,

Yuan,

Liu

et al. 2024

Polymer Engineering & Sci

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Polyamide 6 (PA6) is a widely used thermoplastic engineering polymer, and the toughening modification for PA6 is always a main research topic. Meanwhile, the rigidity and heat resistance of PA6 usually deteriorate. To address this conflict, an epoxy compound (EGDE‐GA) was designed and synthesized and used to modify PA6 by dynamic vulcanization in twin‐screw extruder. EGDE‐GA is a linear molecule with a flexible molecular structure, which is favorable to toughening of PA6, and epoxy groups of EGDE‐GA can form local cross‐linked structure to improve the rigidity and retain the heat resistance of PA6. At the loading of 20 wt% of EGDE‐GA, the modified PA6 (PA6/EGDE‐GA 20) exhibited very high elongation at break and notched impact strength, which were increased by 413% and 520%, respectively, compared to those of PA6. The tensile strength was 61.4 MPa, which was higher than that of PA6. The heat deflection temperature remained almost unchanged. The results showed that the modified polymers may possess the high toughness without sacrificing the original rigidity by building the local crosslinked structure using dynamic vulcanization. The findings provide a feasible method for reusing and upcycling PA6 and other polymers with higher value and wider use in the industry.Highlights The polyamide 6 (PA6) is toughened via dynamic vulcanization. The toughness of modified PA6 is increased by 520% compared with pure PA6. The toughened PA6 exhibits higher tensile strength than that of pure PA6. The toughened PA6 maintains its rigidity and heat resistance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of robust polyamide 6 with local cross‐linked structure via dynamic vulcanization

Ye,

Yuan,

Liu

et al. 2024

Polymer Engineering & Sci

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Effect of process parameters on fracture toughness of PP/EPDM/nanoclay nanocomposite fabricated by novel method of heat assisted Friction stir processing

2016

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Thermoplastic elastomeric nanocomposites due to their excellent mechanical, thermal, and chemical properties have a wide application in airplane, shipbuilding, and automotive industries and medical apparatus. Friction stir processing (FSP) is a novel technique for the fabrication of composites, nanocomposites and microstructural modifications. In this paper, polypropylene/ethylene-propylene-diene monomer (PP/EPDM) nanocomposite with 5 wt% nanoclay are fabricated by FSP to determine the effect of process parameters such as tool rotational speed, traverse speed, shoulder temperature, and number of passes on total work of fracture of this nanocomposite. Response surface methodology (RSM) and Box-Behnken design were used to develop a mathematical model relating the process parameters to the total work of fracture. The results show that the total work of fracture increased with increasing the rotational speed and number of passes and decreasing the shoulder temperature. A maximum total work of fracture of 50.3 N/mm was obtained at traverse speed of 42 mm/min when other parameters were at their center level. The maximum total work of fracture of 61.8 N/mm is achieved at rotational speed of 1,200 rpm, traverse speed of 40 mm/min, shoulder temperature of 1008C, and number of passes of 3. POLYM.

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The shape memory performance of the dynamically vulcanized TPV nanocomposites of trans-isoprene/ low-density polyethylene and organoclay

Zhang,

Jia,

Shen

et al. 2024

J Polym Res

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Triple shape memory materials currently have a wide range of applications in aerospace and healthcare, however, the lack of their mechanical properties limits their wider application. In order to overcome the problem of low mechanical properties of the triple shape memory composites, in this study, organoclay (OC), which is low-cost and has an intercalation-type structure, was introduced as a reinforcing phase in a trans-isoprene (TPI) with regular molecular chains and a low-crosslinking low-density polyethylene (LDPE) matrix. TPI/LDPE/OC shape memory composites (SMP) were prepared by melt blending and vulcanized by dynamic vulcanization technique. Since different OC contents have different effects on the properties of the composites, it is particularly important to select the appropriate OC content. A series of experiments were conducted to reveal the effect of OC content on the mechanical and shape memory properties of TPI/LDPE/OC composites. The results show that OC can form a stable and homogeneous intercalation structure in the composites when the OC incorporation amount is 2 phr, and the mechanical properties and triple shape memory properties of the composites are optimized. This study demonstrates that OC can improve the crystallinity and cross-linking of TPI/LDPE composites, thus providing potential value for the study of multiple shape memory material applications.

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Organoclay-reinforced dynamically vulcanized thermoplastic elastomers of polyamide-6/polyepichlorohydrin-co-ethylene oxide

Cited by 3 publications

References 46 publications

Fabrication of robust polyamide 6 with local cross‐linked structure via dynamic vulcanization

Fabrication of robust polyamide 6 with local cross‐linked structure via dynamic vulcanization

Effect of process parameters on fracture toughness of PP/EPDM/nanoclay nanocomposite fabricated by novel method of heat assisted Friction stir processing

The shape memory performance of the dynamically vulcanized TPV nanocomposites of trans-isoprene/ low-density polyethylene and organoclay

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