Optically transparent self-reinforced poly(ethylene terephthalate) composites: molecular orientation and mechanical properties

Rojanapitayakorn, Pichet; Mather, Patrick T.; Goldberg, A.; Weiß, Robert

doi:10.1016/j.polymer.2004.11.032

Cited by 65 publications

(37 citation statements)

References 27 publications

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“…Ward and coworkers [7][8][9][10][11] further developed this type of composite material using the 'hot compaction' technique. Following this study, opening literatures has reported numerous studies on the preparation of self-reinforced polypropylene (PP) [8,[11][12][13][14][15][16][17], polyethylene terephthalate (PET) [4,9,[18][19], polymethyl methacrylate [20], liquid crystal copolymer [21][22], polylactic acid [23], and poly amide [24][25][26] composites. In particular, the self-reinforced PP composites are now available on the market under the trade name Curv ® , Armordon ® , and Pure ® [5].…”

Section: Fabrication and Mechanical Properties Of Self-reinforced Polmentioning

confidence: 99%

“…This led to the embrittlement of the resulting materials and increased the holding time. In 2005, Rojanapitayakorn et al [18] studied the effect of various hot compaction temperatures on crystallinity, molecular orientation, and mechanical properties of self-reinforced PET (srPET) composites. Yao et al [19] prepared srPET composites by compressing molding laminations of thin amorphous PET films and high crystallinity PET fabrics.…”

Section: Fabrication and Mechanical Properties Of Self-reinforced Polmentioning

confidence: 99%

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Fabrication and mechanical properties of self-reinforced poly(ethylene terephthalate) composites

Chen¹,

Pu³

et al. 2011

Express Polym. Lett.

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Abstract. Self-reinforced poly(ethylene terephthalate) (PET) composites prepared by using a modified film-stacking technique were examined in this study. The starting materials included a high tenacity PET yarn (reinforcement) and a low melting temperature biodegradable polyester resin (matrix), both of which differ in their melting temperatures with a value of 56°C. This experiment produced composite sheets at three consolidation temperatures (T c : 215, 225, and 235°C) at a constant holding time (t h : 6.5 min), and three holding times (3, 6.5 and 10 min) at a constant consolidation temperature of 225°C. This study observed a significant improvement in the mechanical properties obtained in self-reinforced PET composites compared to the pure polyester resin. The results of tensile, flexural, and Izod impact tests proved that optimal conditions are low consolidation temperature and short holding time. The absorbed impact energy of the best self-reinforced PET composite material was 854.0 J/m, which is 63 times that of pure polyester resin.

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Section: Fabrication and Mechanical Properties Of Self-reinforced Polmentioning

confidence: 99%

Section: Fabrication and Mechanical Properties Of Self-reinforced Polmentioning

confidence: 99%

Fabrication and mechanical properties of self-reinforced poly(ethylene terephthalate) composites

Chen¹,

Pu³

et al. 2011

Express Polym. Lett.

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“…The mold was then set in a hydraulic heated press (Carver, Wabash, IN, USA), held to a constant load of 18,000 N (approximately 2.6 MPa) to apply light constraint to the fibers during compaction, and as near a constant 344°C as possible given equipment constraints for a total of 10 minutes. These parameters had resulted in coherent film samples in preliminary studies and were based on work performed on other materials [24,30]. The sample was allowed to cool slowly to below the glass transition temperature (T g , 150°C) before removal from the compaction mold.…”

Section: Sample Preparationmentioning

confidence: 99%

“…The contact stresses within a modular taper junction are also an element that requires biomaterials that can withstand the high stress state resulting from seating and loading during daily activity without wearing out or becoming damaged. One potential candidate biomaterial is self-reinforced composite polyetheretherketone (SRC-PEEK) which is a PEEK fiberbased composite whose matrix comes from hot compaction of the fibers under high pressure [16,17,22,24,28,29]. This high-temperature semicrystalline polymer, when fabricated into an SRC-PEEK thin-film gasket, may be suitable as an interpositional material for the modular junction to meet the previously described requirements.…”

Section: Introductionmentioning

confidence: 99%

Properties and Corrosion Performance of Self-reinforced Composite PEEK for Proposed Use as a Modular Taper Gasket

Ouellette

Gilbert

2016

Clinical Orthopaedics &Amp; Related Research

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Background Fretting corrosion in medical alloys is a persistent problem, and the need for biomaterials that can effectively suppress mechanically assisted crevice corrosion in modular taper junctions or otherwise insulate metalon-metal interfaces in mechanically demanding environments is as yet unmet. Questions/purposes The purpose of this study is to characterize a novel material, self-reinforced composite polyetheretherketone (SRC-PEEK) and to evaluate its ability to inhibit fretting corrosion in a pin-on-disk metalon-metal interface test.Methods SRC-PEEK was fabricated by hot compaction of in-house-made PEEK fibers by compacting uniaxial layups at 344°C under a load of 18,000 N for 10 minutes. SRC-PEEK, bulk isotropic PEEK, and the in-house-made PEEK fibers were analyzed for thermal transitions (T g , T m ) through differential scanning calorimetry, crystallinity, crystal size, crystalline orientation (Hermanns orientation parameter) through wide-angle x-ray scattering, and modulus, tensile strength, yield stress, and strain to failure through monotonic tensile testing. SRC-insulated pin-ondisk samples were compared with metal-on-metal control samples in pin-on-disk fretting corrosion experiments using fretting current and fretting mechanics measurements. Fifty-micron cyclic motion at 2.5 Hz was applied to the interface, first over a range of loads (0.5-35 N) while held at À0.05 V versus Ag/AgCl and then over a range of voltages (À0.5 to 0.5 V) at a constant contact stress of 73 ± 19 MPa for SRC-PEEK and 209 ± 41 MPa for metal-onmetal, which were different for each group as a result of changes in true contact area due to variations in modulus between sample groups. Pins, disks, and SRC samples were imaged for damage (on alloy and SRC surfaces) and evidence of corrosion (on alloy pin and disk surfaces). SRC specimens were analyzed for traces of alloy transferred to the surface using energy dispersive spectroscopy after pinon-disk testing.

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“…In recent years, "self-reinforced" polymer composites have been proposed as an alternative to traditionally reinforced composites for a wide range of applications. Although the focus of this paper is on polypropylene (PP)-based composites, a range of processing routes are presented in literature based on different polymers including polyethylene [2][3][4][5][6][7], polypropylene [8][9][10][11][12][13][14][15][16][17], polyethylene terephthalate [18][19][20], polyethylene naphthalate [21], poly(methyl methacrylate) [22][23][24][25], polyamide [26] and liquid crystal polymers [27,28]. The examples of forming routes described in this paper use polypropylene based composites, however the concepts presented here may also be readily adapted to many other polymers.…”

Section: Introductionmentioning

confidence: 99%

Direct Forming of All-Polypropylene Composites Products from Fabrics made of Co-Extruded Tapes

et al. 2009

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Many technologies presented in literature for the forming of self-reinforced or all-polymer composites are based on manufacturing processes involving thermoforming of pre-consolidated sheets. This paper describes novel direct forming routes to manufacture simple geometries of self-reinforced, all-polypropylene (all-PP) composites, by moulding fabrics of woven co-extruded polypropylene tapes directly into composite products, without the need for pre-consolidated sheet. High strength co-extruded PP tapes have potential processing advantages over mono-extruded fibres or tapes as they allow for a larger temperature processing window for consolidation. This enlarged temperature processing window makes direct forming routes feasible, without the need for an intermediate preconsolidated sheet product. Thermoforming studies show that direct forming is an interesting alternative to stamping of pre-consolidated sheets, as it eliminates an expensive belt-pressing step which is normally needed for the manufacturing of semi-finished sheets products. Moreover, results from forming studies shows that only half the energy was required to directly form a simple dome geometry from a stack of fabrics compared to stamping the same shape from a pre-consolidated sheet.

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Optically transparent self-reinforced poly(ethylene terephthalate) composites: molecular orientation and mechanical properties

Cited by 65 publications

References 27 publications

Fabrication and mechanical properties of self-reinforced poly(ethylene terephthalate) composites

Fabrication and mechanical properties of self-reinforced poly(ethylene terephthalate) composites

Properties and Corrosion Performance of Self-reinforced Composite PEEK for Proposed Use as a Modular Taper Gasket

Direct Forming of All-Polypropylene Composites Products from Fabrics made of Co-Extruded Tapes

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