Korea Research Institute of Chemical Technology

Sangmyung University Seoul Industry-academy Cooperation Foundation

Sangmyung University Seoul Industry-academic Cooperation Foundation

Yeong Un Kim

Yong Sung Park

Yi Jin

Jihoon Shin

Nam Kyun Kim

Je Wan Woo

Kun Wu Chung

Ju Hui Kang

Hyun Chul Oh

Jun Seong Park

Sang Jin Ko

Dae Hee Yun

Bong Keun Song

Hyunho Lee

Min Woo Lee

The present disclosure relates to a method for extracting chitin nanocrystals through electron beam irradiation comprising the steps of: (i) irradiating a chitin-based solid material with an electron beam; (ii) washing the chitin-based solid material subjected to electron beam irradiation; (iii) adding a basic solution to the washed chitin-based solid material; (iv) high-pressure homogenizing the chitin-based solid material dispersed in an aqueous system to which the basic solution is added, to prepare a suspension containing chitin nanocrystals.

Extraction method of chitin nanocrystals using electron beam irradiation and chitin nanocrystal powder

The present invention relates to a method for preparing a non-acid-treated eco friendly cellulose nanocrystal and the cellulose nanocrystals prepared by the same. The methods for preparing the non-acid-treated cellulose nanocrystal and extracting the cellulose nanocrystal from cellulosic materials of the present invention are eco-friendly methods, compared with the conventional preparation method for cellulose nanocrystal based on acid-hydrolysis; are efficient due to the total energy saving process; are easy to utilize side products; and are characterized by high yield to produce the target cellulose nanocrystal. The nanocrystal prepared according to the present invention exhibits equivalent or higher aspect ratio, yield and crystallinity than the cellulose nanocrystal prepared through acid hydrolysis, and has remarkably excellent thermal stability, so that it can be effectively used for the production of membranes, electrical and electronic parts, substrates, heat insulating materials, and reinforcing materials required for durability against heat.

Method for preparing non-acid-treated eco-friendly cellulose nanocrystal, and cellulose nanocrystal prepared thereby

The present invention relates to norbornene-ester-based derivatives, to a method for preparing same, and to the uses thereof. This compound may be used as a plasticizer which can replace a phthalate-based plasticizer.

Norbornene-ester-based derivative, method for preparing same, and uses thereof

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Daejeon, South Korea

Yeong Un Kim