NFC NFC * 510640 TEMPO Nanofibrillated Cellulose NFC NFC 2 h 4 h 2 5 NFC 19 nm 20 kwh 2 h 4 h 2 5 NFC 4h NFC 155. 8 MPa 89. 45% NFC TQ351 A DOI 10. 11980 /j. issn. 0254-508X. 2016. 07. 004 Preparation of NFC by Homogenizing and Ultrasonic Method and the Properties of Its Nanopaper YAO Zhi-ming CHEN Gang * FANG Zhi-qiang KUANG Yu-di KUANG Qi-tong XU Ya-xi ZHANG Bao-jun State Key Lab of Pulp and Paper Engineering South China University of Technology Guangzhou Guangdong Province 510640 * E-mail papercg@ scut. edu. cn Abstract NFC was prepared by using bleached krafteucalyptus pulp as new material it was treated with TEMPO oxidation process at first then fibrillated by homogenizing or ultrasonic method finally the nanopaper made of the NFC was fabricated by solution casting method. The effects of different preparation methods on the properties of NFC and its nanopaper were discussed. The results showed that under different energy consumption NFC prepared by ultrasonic treatment 2 h and 4 h had better transparency higher length to diameter ratio and smaller diameter than that prepared by homogenizing 2 times and 5 times the smallest width of the fibril was only 19 nm. Compared with homogenizing treatment the increase of ultrasonic treatment intensity energy consumption was more advantageous to improve the tensile strength and water vapor permeability of the nanopaper when process energy consumption was lower than 20 kwh moreover the nanopaper prepared by ultrasonic 2 h and 4 h showed better optical properties than homogenizing 2 times and 5 times the highest tensile strength and light transmittance of nanopaper was found by ultrasonic treatment 4 h which were 155. 8 MPa and 89. 45% respectively and superior to the ordinary polymer film it was expected to be applied to the substrate of flexible display electronic devices. Key words homogeneous ultrasonic nanofibrillated cellulose nanopaper NCC NFC 100 nm NCC NFC 1-2 3-4 2016-01-14 973 2010CB732206 2013 2013B090500071 * E-mail papercg@ scut. edu. cn 2016 35 7 19
5 INSTRON UV-1800 NFC Multimode8 6 Tsuguyuki Saito 7 Bruker 1. 2 8 1. 2. 1 TEMPO NFC NFC 88% 9 NFC 126. 4 MPa 1. 5% 1 mmol /g NaBr 0. 1 mmol /g TEMPO 8 mmol /g NaClO NaOH ph 10. 5 101. 79 MPa 86. 9% ph NFC NFC 30 min 1. 2. 2 NFC NFC TEMPO 1 1% TEMPO NFC TEMPO 137. 9 MPa D10 1 NFC NFC D5 2 5 10 Qin 11 TEMPO NFC 5 ~ 10 nm 100 ~ 400 nm Mishra 12 TEMPO NFC 2 h 4 h NFC NFC 2 4 NFC 3 D10 1 NFC 1% 2 h D NFC NFC 1 1 NFC NFC 1 1. 1 AgNO 3 NaOH NaBr NaClO 1. 2. 3 2 6 6- -1- TEMPO NFC DD2 DD5 2 1% TEMPO DD2 DD5 D 2 4 D10 1 D5 2 7. 0 D10 1 D5 5 14. 3 D10 1 2 h 12. 3 2 h 10. 2 4 h 20. 4 /kwh 5 g 25 g /m 2 NFC JB90-SH ph PHSJ-5 1 1. 3 3kW NanoDeBEE Bluepard 1% NFC 1. 3. 1 NFC XRD X D8ADVANCE X Bruker Instron-5565 20 China Pulp & Paper Vol. 35 No. 7 2016
1 1. 3. 3 NFC AFM NFC 1% 0. 04 NFC 1. 3. 4 Bluehill Fukuzumi 3 mm 1 cm 5 5 1. 3. 5 200 ~600 nm 25 100% 3 1. 3. 6 TSY-T1H 38 ±1 90 ±2 % 2 2. 1 NFC 2. 1. 1 NFC 1. 3. 2 NFC TEMPO 1% NFC 0. 01% NFC 2 min 2 NFC JEOL-2100F NFC 3 2 A B D E 2 h 4 h 2 5 NFC 2 NFC 0. 2% 2 NFC VAC-V1 3 NFC 3 NFC 3 NFC 50000 2016 35 7 21
NFC 3 D E 3 E 2 h 4 h NFC 2. 2 DD2 NFC 3 A 2. 2. 1 NFC 3 B NFC NFC 3 C 2. 1. 2 NFC AFM 4 NFC AFM 5 13 NFC 10 ~ 50 nm 6 NFC A ~ E 33 28 24 22 19 nm 6 2 5 115 MPa 2 h 4 h 4 NFC NFC 116 MPa NFC 155. 8 MPa 2. 1. 3 NFC X 5 NFC X NFC 8 5 a 5 16 22. 5 101 002 NFC I 5 b NFC 60% ~ 70% NFC 2 5 NFC 60. 71% 67. 45% 2 h 4 h NFC 62. 47% 67. 52% NFC 2 2 h 7. 0 10. 2 12. 3 kwh NFC 5 25 g /m 2 20 ~ 25 μm 4 NFC AFM NFC X 22 China Pulp & Paper Vol. 35 No. 7 2016
6 GPa NFC 2. 2. 2 6 NFC 14 7 NFC 7 2 h 4 h 7 NFC 2 5 4 h 2 h 2 4. 15 10-4 cm 3 / m 2 d Pa 2 h 4 h 2 5 8 NFC NFC 15 2 h 1637. 97 g / m 2 24 h 2. 2. 3 9 NFC NFC 16 8 2016 35 7 23
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