Baek Jin Kim
KITECH
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Publication
Featured researches published by Baek Jin Kim.
Composite Interfaces | 2009
Nguyen Thi Thanh Binh; Nguyen Dang Luong; Dong Ouk Kim; Seong Hun Lee; Baek Jin Kim; Yong Sang Lee; Jae-Do Nam
Lignin-based thermoplastic copolyester was synthesized for eco-friendly polymers and composite applications using lignin as a macromonomer to form a high molecular weight polymer. Kraft lignin was polymerized with sebacoyl chloride in the presence of triethylamine in N,N-dimethylacetamide (DMAc), and the molecular weight of the synthesized polymer was controlled by the polymerization temperatures and [COCl]/[OH] ratios providing up to 39 000 corresponding to 4–5 repeating units of lignin macromonomers. The glass transition temperature of the synthesized polymer was difficult to measure due to the random distribution of functional groups and irregular configurational or conformational arrangement of natural lignin. Therefore, the complex electric modulus (CEM) technique was used to determine the glass transition of the synthesized polymer to give around 70°C measured by the peak of the imaginary part of CEM. The synthesized lignin-copolyester exhibited good thermal stability up to 200°C in TGA analysis and, thus, it was possible to shape the synthesized polymer using the solvent casting or hot-melt processing techniques at 120°C–140°C without generating odor, fume or irritation. Although the molecular weight should further be increased in the future, the developed methodology may help to exploit new applications for eco-friendly sustainable materials in various fields.
Polymer Bulletin | 2012
Nguyen Dang Luong; Nguyen Thi Thanh Binh; Le Dai Duong; Dong Ouk Kim; Dae-Sik Kim; Seong Hoon Lee; Baek Jin Kim; Yong Sang Lee; Jae-Do Nam
Journal of Applied Polymer Science | 2010
Sung Hee Lee; Seong Yun Kim; Jae Ryoun Youn; Baek Jin Kim
Archive | 2013
Baek Jin Kim; Jin Ku Cho; Sangyong Kim; Do Hoon Lee; Young Gyu Kim; Eun-Sil Kang; Yeon-Woo Hong; Da Won Chae
Archive | 2011
Jin Ku Cho; Baek Jin Kim; Sangyong Kim; Seung Han Shin; Jae Won Jeong; Bo Ra Kim
Archive | 2013
Yong Jin Kim; Vivek Mishra; Guang Meang Son; Jin Ku Cho; Baek Jin Kim
Archive | 2010
Jin Ku Cho; Sangyong Kim; Do Hoon Lee; Bo Ra Kim; Baek Jin Kim; Jae-Won Jung; Sang Hyeup Lee; Jae Soung Lee
Archive | 2012
Jin Ku Cho; Jae Won Jeong; Sangyong Kim; Bo Ra Kim; Baek Jin Kim; Seung Han Shin; Do Hoon Lee
Archive | 2016
Jin Ku Cho; Sangyong Kim; Do Hoon Lee; Bo Ra Kim; Baek Jin Kim; Jae-Won Jung; Sang Hyeup Lee; Jae Soung Lee
Archive | 2016
Yong Jin Kim; Vivek Mishra; Guang Meang Son; Jin Ku Cho; Baek Jin Kim