Characteristics of Aerogels Manufacturing Using Wastepaper

Im Jeong Hwang; Young Kyu Lee; Jong Myoung Won

doi:10.7584/JKTAPPI.2019.02.51.1.100

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Characteristics of Aerogels Manufacturing Using Wastepaper 폐지를 이용한 에어로겔의 제조 특성

28 February 2019. pp. 100-106

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Abstract

In order to evaluate the possibility of producing aerogels using waste paper, white ledger and KOCC (Korea old corrugated container) were fibrillated to produce aerogels and their characteristics were compared with those of hardwood bleached kraft pulp. Grinding was performed at 5, 10, 15 and 20 times, and the concentration of fibrillated fiber was adjusted to 0.5, 1.0 and 1.5% in order to investigate the effect of fibrillation degree and the fibrillated fiber concentration. As the grinding progressed, the average fiber length decreased. In the case of white ledger, the increase of low shear viscosity was delayed. In the case of KOCC, little change was observed, which is closely related to the fibrillation characteristics of the fiber. The degree of polymerization of hardwood bleached kraft pulp and white ledger decreased as the number of grinding times increased. However, KOCC showed no significant change. As the grinding number and fibrillated fiber concentration increased, the specific surface area of the aerogels increased, but the average pore size decreased. These properties were closely related to the fibrillation characteristics of the fibers. As the pore size of the aerogels decreased, the absorption of water and oil decreased. The absorption of water by hydrophobic treatment of aerogels was significantly decreased, but the absorption of oil was improved for white ledger and KOCC.

Keywords

White ledger

KOCC

fibrillation

aerogel

specific surface area

pore size

water absorption

oil absorption

References

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 51
No :1
Pages :100-106
Received Date : 2019-01-31
Revised Date : 2019-02-18
Accepted Date : 2019-02-20
DOI :https://doi.org/10.7584/JKTAPPI.2019.02.51.1.100

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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Literature Cited