셀룰로오스 나노 섬유와 카보머 증점제의 무기 양이온이 미치는 영향 (Impact on Rheology Modifier as Cellulose Nanofibril, Carbomers by Salts)

서지정보

· 발행기관 : 한국펄프·종이공학회
· 수록지 정보 : 펄프종이기술 / 52권 / 6호 / 157 ~ 166페이지
· 저자명 : Rahmini, 전소영, 이경행, 신수정

초록

Cellulose nanofibril was made by grinding followed by high-pressure homogenization with carboxymethylation pretreatment. Cellulose nanofibril as rheology modifier was investigated as compared with Carbomer 934 and Carbomer 941. With 0.1% or 1.0% salt (NaCl, KCl, MgCl2, CaCl2), cellulose nanofibril showed higher viscosity and stronger gel than without salt. Most effective salt for viscosity and gels strength was calcium chloride and potassium chloride was least effective. However, Carbomer 934 and Carbomer 941 showed decreased viscosity and weaker gel than without salt. Most detriemental salt for Carbomers was calcium chloride and next was magnusium chloride as divalent cations.
Cations in gels acted as weakening the repulsive force for cellulose nanofibril, which resulted in higher viscosity and stronger gels. In case of Carbomers, cations acted as coagulants, which resulted in lower viscosity and weaker gels.

영어초록

Cellulose nanofibril was made by grinding followed by high-pressure homogenization with carboxymethylation pretreatment. Cellulose nanofibril as rheology modifier was investigated as compared with Carbomer 934 and Carbomer 941. With 0.1% or 1.0% salt (NaCl, KCl, MgCl2, CaCl2), cellulose nanofibril showed higher viscosity and stronger gel than without salt. Most effective salt for viscosity and gels strength was calcium chloride and potassium chloride was least effective. However, Carbomer 934 and Carbomer 941 showed decreased viscosity and weaker gel than without salt. Most detriemental salt for Carbomers was calcium chloride and next was magnusium chloride as divalent cations.
Cations in gels acted as weakening the repulsive force for cellulose nanofibril, which resulted in higher viscosity and stronger gels. In case of Carbomers, cations acted as coagulants, which resulted in lower viscosity and weaker gels.

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