Jun Lim, Min-Cheol Kim, Munju Goh, Hyeounk Yeo, Dong Geun Shin, Bon-Cheol Ku, Nam-Ho You 한국탄소학회 Carbon Letters 4 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.4 9 251-254 (4 pages)

..PAGE:1 251 Synthesis and characterization of polybenzoxazole/graphene oxide composites via in situ polymerization Jun Lim 1, Min-Cheol Kim 2, Munju Goh 1, Hyeounk Yeo 1, Dong Geun Shin 1, Bon-Cheol Ku 1 and Nam-Ho You 1,♠ 1Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Wanju 565-905, Korea 2Department of...

Ye Ji Noh, Han Sang Kim, Seong Yun Kim 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2012, Vol.13 No.4 8 243-247 (5 pages)

CBT powder and polymerization catalyst. The num- ber of butyl groups in the CBT oligomer mixture varies from two to seven, resulting in a melting range from 130 to 160°C. CBT 160 resin was dried overnight at 110°C in order to remove residual moisture, which could interfere with the polymerization reaction [17]. 2.2. Composite preparation The thermoplastic CNT mat composites were prepared by...

Jiadeng Zhu, Cheol-Ho Lee, Han-Ik Joh, Hwan Chul Kim, Sungho Lee 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2012, Vol.13 No.4 6 230-235 (6 pages)

of Polyimide Composites Containing Graphene Oxide Via In-Situ Polymerization Jiadeng Zhu 1,2, Cheol-Ho Lee 1,2, Han-Ik Joh 1, Hwan Chul Kim 2,♠ and Sungho Lee 1,♠ 1Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Jeonbuk, 565-905, Korea 2Department of Organic Materials and Fiber Engineering, Chonbuk National...

YouZhou, LiweiXue, KaiYi, LiZhang, SeungKonRyu, RiGuangJin 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2012, Vol.13 No.3 9 182-186 (5 pages)

tension (γ/M) and cohesive energy density of monomers can be obtained by changing the coagulation bath component for effective precipitation polymerization of acrylonitrile in wet spinning. Key words: surface tension, cohesive energy density, precipitation polymerization, coagu- lation bath 1. Introduction Surface tension (γ) is a type of force caused by unbalanced molecular attraction on a...

WeiweiLiu, ShuangkunZhang, JingWang, SeungKonRyu, Ri-guangJin 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2012, Vol.13 No.3 1 133-138 (6 pages)

Korean Carbon Society http://carbonlett.org Abstract According to kinetic mechanisms, liquid phase polymerization and solid phase polymerization are different in acrylonitrile (AN) polymerization, and so the relationship between the contribution ratio and molecular weight distribution (MWD) was obtained through theoretic analysis. The precipitation homopolymerization of AN was carried out in a...

김기영, 박우리, 정영식, 신동근, 한진욱 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2011, Vol.12 No.1 6 31-38 (8 pages)

and then purified by recrystallization from benzene to give CA [9]. 2.3. Copolymerization of PAN copolymers Acrylonitrile homopolymers and copolymers with IA and CA were prepared by solution polymerization technique in DMSO under nitrogen atmosphere at 60 oC, using a 1000 mL reactor fitted with an overhead stirrer. The molar fraction of IA was 0.82 mol%, and the molar CA content was varied from...

Hana Ryu, Seong-Ho Choi 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2010, Vol.11 No.3 8 216-223 (8 pages)

Radiation-Induced Graft Polymerization Hana Ryu and Seong-Ho Choi ♠ Department of Chemistry, Hannam University, Daejeon 305-811, Republic of Korea ♠e-mail:shchoi@hnu.kr (Received July 26, 2010; Accepted September 2, 2010) Abstract Two-types of ionically modified multi-walled carbon nanotube (MWNTs) based sensors were developed by radiation- induced graft polymerization using vinyl monomers such...

Qi-feng Qin, Yong-qiang Dai, Kai Yi, L iZhang, Ryu Seung Kon, Ri- 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2010, Vol.11 No.3 2 176-183 (8 pages)

Korea ♠e-mail:jin.riguang@163.com (Received May 10, 2010; Accepted September 8, 2010) Abstract PAN precursor fibers were produced via wet-spinning process, and effects of polymerization and spinning processes, especially the stretching process, were investigated on mechanical properties and micro-morphologies of precursor fibers. An increase in molecular weight, dope solid and densification and a...

Jing Zhang, Fengjing Bu, Yongqiang Dai, Liwei Xue, Zhixian Xu, Se 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2010, Vol.11 No.1 4 22-27 (6 pages)

polymerization. Recently, precipitation polymerization is increasing the interests in the preparation of high molecular weight PAN due to the advantage of small chain transfer reaction than solution polymerization in using a second monomer [7-10]. Bahrami [11] reported the effect of H2O/dimethyl formamide (DMF) on the conversion rate and intrinsic viscosity during precipitation polymerization usi...

김원용, 장영효, 박경윤, 김철중, 신광순, 박용하 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 6 Pages

대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 1995, 제 35권 제 3호 12 531-536 (6 pages)

..PAGE:1 ..PAGE:2 ..PAGE:3 ..PAGE:4 ..PAGE:5 ..PAGE:6