A convenient method to fabricate porous cross-linked PCL membrane by using dual pore-forming agents

Yin, Guang‐Zhong; Zhang, Lianwei; Li, Qifang

doi:10.1016/j.matlet.2016.05.167

Cited by 5 publications

(1 citation statement)

References 23 publications

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“…In addition, in order to obtain materials with high tenacity and porosity like ePTFE, several methods related to the fabrication of porous structure were investigated. Yin et al . prepared the polycaprolactone (PCL) porous membranes through mixed NaCl particles, polyethylene glycol (PEG), benzoyl peroxide (BPO), and polycaprolactone in dichloromethane (DCM) by ultrasonic dispersion, and then removed the DCM before press‐molded at130 °C.…”

Section: Introductionmentioning

confidence: 99%

Effect of tensile rates on thermal and mechanical properties of porous PTFE composites

Kou

Pan

et al. 2019

J of Applied Polymer Sci

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To achieve polymer‐matrix composites for sealing materials with thermostability and toughness, PTFE composites filled with short glass fibers (SGFs) were hyperthermal stretched to prepare a substrate material with high thermal stability and porosity. The effects of various tensile rates on the thermal and mechanical properties and morphologies were investigated. The results revealed that the thermal stability could be improved slightly and the thermal expansion coefficient of composites increased by the tensile rate. Through observing the morphologies, tensile process produced cavities and the increased tensile rate had negligible effects on porosity, which also could be proved by density test. From mechanical properties analysis, stretched composites exhibited that the tensile strength increases first and then decreases with the increased tensile rate. Although the variation tendency of Young's modulus is similar to that of tensile strength, which is smaller than that of unstretched composite. When the tensile rate reached 50 mm·min−1, the tensile strength and Young's modulus of the stretched composites increased by 65 and 9% to maximum, respectively. Meanwhile, elongation at break and shore hardness decreased. The thermal and mechanical properties improvement could be ascribed to the strain‐induced crystallization and crystal alignment. In addition, the interplanar spacing and grain size were inversely proportional to the tensile rate. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48175.

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Section: Introductionmentioning

confidence: 99%

Effect of tensile rates on thermal and mechanical properties of porous PTFE composites

Kou

Pan

et al. 2019

J of Applied Polymer Sci

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Research on the electrospun foaming process to fabricate three‐dimensional tissue engineering scaffolds

Zhao

Cao

et al. 2018

J of Applied Polymer Sci

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Three‐dimensional (3D) tissue engineering scaffolds were fabricated by an electrospun foaming process. A two‐dimensional (2D) membrane was fabricated first by the electrospinning technology, and then a sodium borohydride gas foaming process was used to expand the 2D membrane to a 3D tissue engineering scaffold. The effects of six process parameters on the foamed height of 3D scaffolds were systematically studied during fabrication using a L27(313) orthogonal design table. The mechanism of the gas foaming process was investigated by a porosity analysis and a scanning electron microscopy analysis of the scaffolds' surface and cross‐sectional morphology. Finally, wettability experiments and L929 fibroblast adhesion and proliferation experiments were carried out on the 3D scaffolds. The results showed that the concentration of polycaprolactone (PCL) has the most significant effect on height, and the optimal process parameters were 8 wt % PCL solution, 15 kV voltage, 4 mL h−1 flow rate, 20 cm distance, 60 min spinning time, and 5 g sodium borohydride. The 2D membrane with a smaller fiber diameter and higher porosity was more easily foamed. The fabricated 3D scaffold had good wettability, and cell absorbance (OD value) increased by 25.34% on day 7 over that of the 2D electrospun nanofibrous scaffold. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46898.

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Biodegradable polymers: a cure for the planet, but a long way to go

Yin

Yang

2020

J Polym Res

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A convenient method to fabricate porous cross-linked PCL membrane by using dual pore-forming agents

Cited by 5 publications

References 23 publications

Effect of tensile rates on thermal and mechanical properties of porous PTFE composites

Effect of tensile rates on thermal and mechanical properties of porous PTFE composites

Research on the electrospun foaming process to fabricate three‐dimensional tissue engineering scaffolds

Biodegradable polymers: a cure for the planet, but a long way to go

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