Effect of chain extender and terpolymers on tensile and fracture properties of polyamide 6

Yilmaz, Sinan; Gül, Okan; Yılmaz, Taner

doi:10.1016/j.polymer.2015.03.057

Cited by 18 publications

(21 citation statements)

References 44 publications

(40 reference statements)

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“…They are considered to be superior to conventional RPDs with metal clasps in terms of esthetics; however, the use of NMCDs made from thermoplastics, especially polyamide, may seriously affect some tissues because of the low rigidity of thermoplastics. Several types of polyamide are commercially available 4,18) . Polyamides are semicrystalline polymers whose repeating units are characterized by the amide group.…”

Section: Discussionmentioning

confidence: 99%

“…However, the flexural strength, elastic modulus and rigidity are inferior to other NMCD materials such as polyester and polycarbonate 3,13) . In contrast, polyamide-6 is a particularly attractive class of polymer because of its competitive price, excellent strength and rigidity, low friction coefficient, and high dimensional stability and chemical and wear resistance, making it mostly used type of polyamide worldwide 18) . Therefore, this study demonstrated the development of GFRTPs composed of E-glass fiber and polyamide-6 as an NMCD material, and investigated the effect of varying fiber content (0 to 50 mass%) on its physical properties.…”

Section: Discussionmentioning

confidence: 99%

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Effect of fiber content on flexural properties of glass fiber-reinforced polyamide-6 prepared by injection molding

2017

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The use of non-metal clasp denture (NMCD) materials may seriously affect the remaining tissues because of the low rigidity of NMCD materials such as polyamides. The purpose of this study was to develop a high-rigidity glass fiber-reinforced thermoplastic (GFRTP) composed of E-glass fiber and polyamide-6 for NMCDs using an injection molding. The reinforcing effects of fiber on the flexural properties of GFRTPs were investigated using glass fiber content ranging from 0 to 50 mass%. Three-point bending tests indicated that the flexural strength and elastic modulus of a GFRTP with a fiber content of 50 mass% were 5.4 and 4.7 times higher than those of unreinforced polyamide-6, respectively. The result showed that the physical characteristics of GFRTPs were greatly improved by increasing the fiber content, and the beneficial effects of fiber reinforcement were evident. The findings suggest that the injectionmolded GFRTPs are adaptable to NMCDs because of their excellent mechanical properties.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of fiber content on flexural properties of glass fiber-reinforced polyamide-6 prepared by injection molding

2017

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“…Recently, the properties of the polyamides are optimized by terpolymerization/copolymerization with other materials such as exible spacers having their distinguishing features thereby incorporating the properties of both polyamides and the induced material with desirable features [8][9][10]. Consequently, the processibility of material is made easier without compromising over the loss of distinguishing features like stability and thermo-mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Khan

Akhter

Gul

et al. 2022

J Inorg Organomet Polym

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Efforts have been devoted to synthesize and characterize processable polymers with desired properties.Herein, four different series of aromatic and aliphatic terpolyamides were prepared via solution phase polycondensation of 4,4'-oxydianiline and hexamethylenediamine (HMDA) with various diacids chlorides (isophthalyol dichloride, terepthalyol dichloride, 1, 1'-ferrocene dicarboxylic acid chloride and transazobenzene-4, 4'-dicarbonyl chloride). The structural, morphological and physico-chemical nature of as prepared polymers was explored by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermal analysis (TGA and DSC), and wide-angle x-ray diffraction (WAXRD). Moreover, an aliphatic diamine was incorporated in varying concentration as a exible methylene spacer and the effect of its concentration on the properties of polyamides was also studied. Changes in various physicochemical properties such as solubility, inherent viscosity, surface morphology and ame retarding behaviour were investigated. Marked difference in morphology and solubility was observed with the change in the ratio of segments in the chain. Inherent viscosities of polymers ranged from 1.8052-1.6274 dl/g indicating reasonably moderate molecular weights. Interestingly, ferrocene based aromatic polymers were more thermally stable (T g 260 o C, T i 310 o C, T h 525 o C, T f 720 o C, for PF 0 ), and also found to exhibit best ame retarding behavior (limiting oxygen index (LOI) value for PF 0 is LOI 33.15 %).

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“…[30] Chemical bonding between BCPs and epoxy matrix can result in better toughening effects. [36,37] However, the influence of reactivity of reactive BCP on the morphologies and mechanical performance of blends was not fully investigated.…”

Section: Introductionmentioning

confidence: 99%

Control of inclusion size and toughness by reactivity of multiblock copolymer in epoxy composites

Zhan

Zhang

et al. 2016

Polymer

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In this paper, the strategy to achieve high fracture toughness and impact strength of epoxy blends by introducing a new family of reactive block copolymer (RBCP), poly[styrene-alt-(maleic anhydride)]block-polystyrene-block-poly(n-butyl acrylate)-block-polystyrene, with different reactivity is reported. Inclusions size of RBCP in cured blends was controlled from nanometer to micrometer by simply adjusting the fraction of reactive block in RBCP. The systematical study on the structure-property relationship revealed that the thermal and mechanical properties of modified blends strongly depend on inclusion size. The results suggested that blends containing nano inclusions of RBCP were more sensitive to test rates. And blends containing sub-micron inclusions showed substantially increased toughness in SENB measurements and IZOD impact tests without loss in T g. The findings of this work provide an insight on developing toughened epoxy thermosets utilized for both high and low fracture rates via innovative reactive blending.

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Effect of chain extender and terpolymers on tensile and fracture properties of polyamide 6

Cited by 18 publications

References 44 publications

Effect of fiber content on flexural properties of glass fiber-reinforced polyamide-6 prepared by injection molding

Effect of fiber content on flexural properties of glass fiber-reinforced polyamide-6 prepared by injection molding

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Control of inclusion size and toughness by reactivity of multiblock copolymer in epoxy composites

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