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RISS 인기검색어
- 검색키워드
- 저자 : Shaoju Fu (검색결과 3 건)
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Surface Coating Modified Polyglycolide (PGA) Braided Threads as Potential Thread-embedding Materials
Shaoju Fu,Peihua Zhang 한국섬유공학회 2020 Fibers and polymers Vol.21 No.10
Polyglycolic acid (PGA) braided threads offer numerous advantages, including good biocompatibility andbiodegradability for the application of acupoint catgut-embedding therapy (ACET). However, the surfaces of PGA threadsare relatively smooth and lack some function characteristics in the clinical practice. In this study, four types of PGA braidedthreads with different strands (n=2, 4, 6 and 8) were fabricated firstly, and then to deposit chitosan molecules on theirsurfaces. Afterwards, characterizations such surface morphology, swelling, mechanical, antibacterial and cytotoxicityproperties of threads were fully explored. The results showed that PGA threads after chitosan coating treatment showed largerweight and diameter changing, and swelling ratio. Mechanical properties (breaking strength, breaking elongation andflexibility) had been greatly improved after coating treatment. As for the biological experiments, modified PGA threads havebetter cell viability and antibacterial activity comparted to that of unmodified ones. In conclusion, surface coating methodwarrant further study to develop novel PGA embedding materials with outstanding clinical efficacy.
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Shaoju Fu,Peihua Zhang 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3
Polylactic acid (PLA) and polyglycolic acid (PGA) have been widely used in the acupoint catgut embeddingtherapy (ACET) field. However, some defects such as hydrophobicity, poor swelling and cell adhesion properties whichsignificantly limit their further applications. Herein, we report a strategy for developing ACET materials via 3D fabrication andplasma treatment. The results showed that modified samples showed rougher surface morphology and better hydrophilicity. Sample L4G0 (PLA strands: PGA strands=4:0) showed the largest tensile strength and elongation values at 32.15±5.26 cN/dtexand 56.37±4.38 %, respectively. Samples were proved to be non-toxicity and had better cell attachment and tissue growthability after modification. In sum, the strategy of plasma modified PLA/PGA is deserved to be further studied with outstandingclinical efficacy.
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Juan Qian,Ting Xie,Liqun Chen,Zhijiang Li,Ning Guo,Shaoju Fu,Peihua Zhang 한국섬유공학회 2022 Fibers and polymers Vol.23 No.11
Polyethylene is getting tremendous attention in personal thermal management textiles for summer, but there is lackof systematical coolness and thermal-wet comfort research in wearing knitting fabrics. In this work, two group of knittingstructure were designed following a sandwich structure model that consisted of a middle layer of multifilament and twoasymmetric outer layers. Nine bi-layer samples interknitted with polyester were fabricated with one face composed ofpolyester filaments and the other face built of polyethylene and polyester filaments. Textile parameters, such as knittingstructure, polyethylene fractions and distribution in the inner layer, yarn composition and relative porosity, were considered. Breathability, thermal transfer properties, moisture management performance and dynamic cooling performance wasmeasured and evaluated to investigate the thermal-wet and coolness relevant comfort properties of these fabrics. It was foundthat the fabrics knitted with tuck stitches have better air permeability, contact coolness, overall moisture management anddynamic cooling performance in comparison to the fabrics knitted with float stitches. The air permeability became better withthe increasing proportion of polyethylene and the decreasing ratio of tuck stitch. The effective contact area of polyethylenewith skin was beneficial to promote the transient thermal conductivity and dynamic cooling performance of fabric. The resultalso suggested that an asymmetric structure with meshes in the inner layer were beneficial to promote moisture management. Meanwhile, when the proportion of tuck stitch in inner layer was 6.25 %, the air permeability and heat transfer properties offabric were the best. Moreover, independent tests had proved that the performance of transient and steady thermalconductivity of polyethylene/polyester fabric was the best when the mass ratio of polyethylene was 49.3 % in this study.
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