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SURFACE MODIFICATION OF POLYPROPYLENE MICROFIBRE BY PLASMA-INDUCED VAPOR GRAFTING WITH ACRYLIC ACID 被引量:1
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作者 Hong-jun Liang Qiu-shi Sun Xiao-huai Hou Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, China 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1999年第3期221-229,共9页
The hydrophilicity, dyeing and antistatic ability of polypropylene microfibre (PPMF) were improved by plasma-induced vapor grafting with acrylic acid. The effects of plasma discharge time, power, liquid phase acrylic ... The hydrophilicity, dyeing and antistatic ability of polypropylene microfibre (PPMF) were improved by plasma-induced vapor grafting with acrylic acid. The effects of plasma discharge time, power, liquid phase acrylic acid temperature and environmental temperature on grafting yield were investigated. The existence of grafted polyacrylic acid (PAA) was verified by ESCA and ATR FT-IR. The morphology of grafted PAA was directly observed by SEM. The wicking test shows that the hydrophilicity of modified PPMF is greatly enhanced. The dyeability test of modified PPMF was carried out using Dispersion Yellow. It was found that the dye uptake ratio is linear to the weight percent of grafting. The antistatic ability was indicated by specific resistance. The specific resistance of modified PPMF was reduced to 10(6) similar to 10(7) Ohm . cm, thus the antistatic ability was considerably improved. 展开更多
关键词 polypropylene microfibre (PPMF) plasma-induced grafting DYEABILITY antistatic ability HYDROPHILICITY contact angle
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All-fibre micro-ring resonator based on tapered microfibre
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作者 董小伟 鲁韶华 +2 位作者 冯素春 许鸥 简水生 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第3期1029-1033,共5页
In this paper, bendloss characteristics of an optical fibre are investigated in detail, and the results show that the resonator with a smaller ring radius, wider free spectrum range (FSR), higher fineness (f) and ... In this paper, bendloss characteristics of an optical fibre are investigated in detail, and the results show that the resonator with a smaller ring radius, wider free spectrum range (FSR), higher fineness (f) and quality-factor (Q) can be achieved by using microfibres. Based on the improved fused taper technique, a high-quality microfibre with 5 ttm radius has been fabricated, and an all-fibre micro-ring resonator with a radius of only 500μm is realized using self-coiling coupling method. The good-resonant characteristic makes the all-fibre device be expected to avoid bendloss and connection loss associated with planar waveguide integration. 展开更多
关键词 all-fibre device micro-ring resonator microfibre fused taper
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New Disperse Dyes for Polyester Microfibres
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作者 Wei JIAN Lu Bai CHENG 《Chinese Chemical Letters》 SCIE CAS CSCD 2003年第2期118-120,共3页
A series of disperse dyes bearing ether groups have been synthesized. The visible absorption spectra of them were studied, their fastness on polyester microfibres were investigated.
关键词 Disperse dye ether group microfibres.
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Adsorption dynamics of ethane from air in structured fixed beds with different microfibrous composites
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作者 Huan Xiang Huiping Zhang +1 位作者 Pengfei Liu Ying Yan 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第1期14-24,共11页
Adsorption dynamics of ethane in two granular fixed beds and structured fixed beds with microfibrous composites was studied.5A zeolite membrane 5A/PSSF(paper-like sintered stainless steel fiber)and microfibrous entrap... Adsorption dynamics of ethane in two granular fixed beds and structured fixed beds with microfibrous composites was studied.5A zeolite membrane 5A/PSSF(paper-like sintered stainless steel fiber)and microfibrous entrapped activated carbon(MEAC)composites were prepared by wet layup papermaking/sintering technique and in-situ hydrothermal method.Microfibrous composites were characterized by X-ray diffraction,scanning electron microscopy and N2 adsorption/desorption.Structured fixed beds were designed by filling granular adsorbents(5A zeolite or activated carbon)and microfibrous composites at the inlet and outlet of the beds,respectively.Effects of flow rate,bed height and structure on the breakthrough curves were investigated.The length of unused bed(LUB)was determined,and Yoon–Nelson model was used to fit the breakthrough curves.The experimental results showed ethane was effectively adsorbed on the granular adsorbents and microfibrous composites.Both composites could decrease the LUB values and enhance bed utilization.All breakthrough curves fitted well to Yoon–Nelson model,with correlation coefficient exceeding 0.89.The adsorption rate of ethane could be improved in the structured fixed beds,which showed an enhanced mass transfer efficiency for ethane adsorption.LUB values of structured fixed beds with 5A/PSSF composites were larger,the bed utilization values were lower,and the adsorption rate constants were higher than those with MEAC composites under the same conditions. 展开更多
关键词 5A zeolite membrane Microfibrous entrapped activated carbon ETHANE Structured fixed bed Adsorption dynamics
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Paper-like Microfibrous Nickel Catalyst for Hydrogen Production via NH_3 Decomposition in Fuel Cell Applications
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作者 Yong LU Hong WANG Ye LIU Ming Yuan HE 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第10期1397-1400,共4页
A sinter-locked three-dimensional network of microfibrous nickel catalyst has been fabricated based on wet layup papermaking and sintering processes and this novel approach permits the production of -11 W fuel cell po... A sinter-locked three-dimensional network of microfibrous nickel catalyst has been fabricated based on wet layup papermaking and sintering processes and this novel approach permits the production of -11 W fuel cell power H2 via NH3 decomposition with a conversion of 97% at 750 ℃ in a bed of 0.6 cm^3. 展开更多
关键词 Microfibrous catalyst NICKEL hydrogen production AMMONIA fuel cells.
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