나노피브릴화 셀룰로오스의 제조 및 PVA 복합필름의 성질에 미치는 효과

우현진; 김준호; Hyun Jin Woo; Joon Ho Kim

Polymer(Korea), Vol.42, No.1, 52-58, January, 2018

DOI10.7317/pk.2018.42.1.52 Export Citation

나노피브릴화 셀룰로오스의 제조 및 PVA 복합필름의 성질에 미치는 효과

Preparation of Nanofibrillated Cellulose and Its Effect on the Properties of PVA Composite Film

우현진, 김준호^{1, †}

영남대학교 대학원 유기신소재공학과
¹영남대학교 공과대학 화학공학부

Hyun Jin Woo, and Joon Ho Kim^{1, †}

Department of Advanced Organic Materials, Yeungnam University, Gyeongsan 38541, Korea
¹School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea

E-mail:

초록

Eucalyptus 크라프트 펄프를 2,2,6,6-tetramethyl-1-piperidinyloxy(TEMPO)로 처리하여 셀룰로오스를 부분 산화시킨 후, 초미세분쇄기, 고압 균질화기 등의 기계적 처리로 나노피브릴화 셀룰로오스(NFC)를 제조하였다. NFC의 형태, 카복시기 함량, 유변학적 특성 등을 측정하였으며, NFC가 소량 혼합된 PVA 복합필름을 제조하여 광학적 특성과 기계적 성질 등을 평가하였다. 나노피브릴화 셀룰로오스의 섬유직경은 기계적 처리 횟수가 증가함에 따라 감소하였다. PVA/NFC 복합필름의 기계적 특성은 NFC 함량 0.05 wt%에서 가장 우수하였으며, 극소량의 NFC의 첨가로도 필름의 기계적 특성은 상당한 수준으로 향상되었으며, NFC 첨가에도 불구하고 PVA 필름의 광투과도의 손실은 크지 않았다.

The fibrillation of cellulose from eucalyptus kraft pulp was obtained by oxidation treatment with 2,2,6,6- tetramethyl-1-piperidinyloxy (TEMPO) as chemical pretreatment at pH 10. The chemically-treated cellulose was followed by mechanical treatments such as ultrafine grinding or high-pressure homogenization treatments to yield nanofibrillated cellulose (NFC). The morphology, carboxyl group content, and rheological properties of the prepared NFC were measured. Poly(vinyl alcohol) (PVA) composite films containing small amount of NFC were prepared and the optical and mechanical properties of the films were evaluated. The fiber thickness of NFC decreased with increasing pass number of mechanical treatments. The mechanical properties of the PVA/NFC composite films were the best at 0.05 wt% of NFC content. The film showed small decrease in the optical transmittance with increase in the added amount of NFC.

Keywords:nanofibrillated cellulose;TEMPO-oxidation;ultrafine grinder;high-pressure homogenizer;PVA film

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[2] Isogai A, Kato Y, Cellulose, 5, 153 (1998)

[3] Sim KJ, Youn HJ, Jo YH, J. Korea TAPPI, 47, 42 (2015)

[4] Nakagaito AN, Yano H, Appl. Phys., 80, 155 (2005)

[5] Fujisawa S, Odita Y, Fukuzumi H, Satio T, Isogai A, Carbohydr. Polym., 84, 579 (2011)

[6] Lee SY, Chun SJ, Doh GH, Lee S, Kim BH, Min KS, Kim SC, Huh YS, Mokchae Konghak, 36, 197 (2011)

[7] Saito T, Kimura S, Nishiyama Y, Isogai A, Biomacromolecules, 8(8), 2485 (2007)

[8] Hietala M, Rollo P, Kekalainen K, Oksman K, J. Appl. Polym. Sci., 131, 39981 (2014)

[9] Araki J, Wada M, Kuga S, Langmuir, 17(1), 21 (2001)

[10] Saito T, Nishiyama Y, Putaux JL, Vignon M, Isogai A, Biomacromolecules, 7(6), 1687 (2006)

[11] Hietala M, Rollo P, Kekalainen K, Oksman K, J. Appl. Polym. Sci., 131, 39981 (2014)

[12] Sim KJ, Ryu JH, Youn HY, J. Korea TAPPI, 45, 35 (2013)

[13] Qua EH, Hornsby PR, Sharma HSS, Lyons G, McCall RD, J. Appl. Polym. Sci., 113(4), 2238 (2009)

[14] Rudraraju VS, Wyandt CM, J. Pharmaceutics, 292, 63 (2005)

[15] Ali N, Tom L, Jonas S, Cellulose, 21, 1561 (2014)

[16] Saito T, Isogai A, Biomacromolecules, 5(5), 1983 (2004)

[17] Sim KJ, Youn HJ, Jo YH, J. Korea TAPPI, 47, 42 (2015)

[18] Youn HJ, Ryu JH, Seo DJ, Yang JY, Ryu JB, Proceedings of KTAPPI Spring Conference, 151 (2011).

[19] Iotti M, Gregersen OW, Moe S, Lenes M, Polymer, 19, 137 (2011)

[20] Loranger E, Piche AO, Daneault C, Nanomaterials, 2, 286 (2012)

[21] Dimic-Misic K, Puisto A, Gane P, Nieminen K, Alava M, Paltakari J, Maloney T, Cellulose, 20, 2847 (2013)

[22] Cho MJ, Park BD, J. Ind. Eng. Chem., 17(1), 36 (2011)

[23] Sirvio JA, Honkaniemi S, Visanko M, Liimatainen H, ACS Appl. Mater. Interfaces, 7, 19691 (2015)

[24] Zhou YM, Fu SY, Zheng LM, Zhan HY, eXPRESS Polym. Lett., 6, 794 (2012)

[25] Lieu D, Sun X, Tian H, Maiti S, Ma Z, Cellulose, 20, 2981 (2013)

[26] Li W, Zhao X, Huang Z, Liu S, J. Polym. Res., 20, 210 (2013)

[27] Zimmermann T, Pohler E, Geiger T, Adv. Eng. Mater., 6, 754 (2004)

[28] Lu J, Wang T, Drzal LT, Compos. Pt. A-Appl. Sci. Manuf., 39, 738 (2008)