32 2 2011 2 Journal of Textile Research Vol. 32 No. 2 Fen. 2011 0253-9721 2011 02-0096-06 1 1 2 1. 201620 2. 201620 85% CTS N- HDCC HDCC N- NMA O- -N- NMA-HDCC HDCC NMA-HDCC 95% HDCC 100% 30 NMA-HDCC 85% NMA-HDCC 2 g / L 140 5 min TS 195. 58 A Antibacterial property of fabric treated with a fiber-reactive chitosan derivative PAN Hong 1 ZHAO Tao 1 2 1. College of Chemistry Chemical Engineering & Biotechnology Donghua University Shanghai 201620 China 2. Key Laboratory of Science & Technology of Eco-Textile Ministry of Education Donghua University Shanghai 201620 China Abstract N-hydroxypropyl lauryl dimethyl ammonium chloride chitosan HDCC was prepared by introducing epoxypropyl lauryl dimethyl ammonium chloride to the amino-group of chitosan CTS with a degree of deacetylation about 85% and then HDCC with good water solubility was crosslinked with N- hydroxymethyl acrylamide NMA thus obtained the end product of a novel chitosan derivative O- acrylamidomethyl-n- 2-hydroxy-3-dodecyl ammonium propyl chitosan chloride NMA-HDCC that can form covalent bond with cellulosic fiber. The antibacterial experiment demonstrated that the cotton fabrics treated with CTS HDCC and NMA-HDCC all showed above 95% bacteria inhibiting ratio against Bacillus coli and HDCC in particular showed nearly 100%. After 30 washing cycles the cotton fabric treated by NMA-HDCC exhibited above 85% bacteria inhibiting ratio though those treated by CTS chitosan quaternary ammonium salt exhibited little effect. For durable antibacterial effect the optimal process conditions for treating cotton fabrics with NMA-HDCC were determined as follows mass concentration of finishing agent 2 g / L curing at 140 for 5 min. Key words chitosan quaternary ammonium salt modification antibacterial property washing durability 2010-01 - 07 2010-05 - 28 08ZR1400200 1984 E-mail tzhao@ dhu. edu. cn
2 97 CTS 44113 1 1. 2 FT-IR Nicolet Magna-IR560 2-7 ATLAS DZF-1 8 THZ-C- 1 YXQ- IS-50S11 KYC ph 100B BS-1E Excel SPX-105B 1. 3 Tsurugai K 9 N N N- 1. 3. 1 NMA-HDCC 1. 3. 1. 1 N- Kim 10 1 h 50 10 h 20 12 h 1. 3. 1. 2 N- HDCC 2 g 85 1 h NMA 11 O- -N- 1 h 7 g 7 h NMA-HDCC ph 24 h 80 1 1. 1 14. 6 tex 14. 6 tex 524 /10 cm 284 /10 cm 1. 3. 1. 3 NMA-HDCC 1. 2 g HDCC 4. 6 g NMA 0. 01 g 0. 53 g NH 4 Cl 130 10 min 15 ml 100 ml 95% Acros 1 1 Organics 80 N- 1 HTCC O- -N- 1. 3. 1. 4 NMA-HDCC NMA-HTCC 2 NMA-HDCC 11 N- β-c 85. 7%
98 32 1 Fig. 1 NMA-HDCC Preparation of NMA-HDCC Fig. 2 2 NMA-HDCC Reaction of NMA-HDCC with cotton fiber NMA-HDCC OH - 5 min 12 1. 3. 2 3 g 2 g / L 1% NaHCO 3 20 g / L 2. 1 NMA-HDCC NMA-HDCC 100 ml 85% 70 4 min 140 5 min 6 min NMA-HTCC NMA-HDCC 1. 3. 3 24 h 37 150 r / s 0. 1 ml 9. 9 ml 10 5 ~ 10 6 10 ~ 15 ml 1 ml 20 mm 37 1 d 2 AATCC 100 1999 R = B - A / B 100% R B A 1. 3. 3. 2 40 1 30 2 min 2 min 30 2 2. 1. 1 KBr IR 3 2 923 2 853 cm - 1 CH 3 CH 2 721 cm - 1 CH 2 n 1 265 903 cm - 1 C O 1. 3. 3. 1 1
2 99 3 Fig. 3 IR Infra-red spectrum IR of epoxypropyl dodecyl dimethyl quaternary ammonium salt 2. 1. 2 NMA-HDCC KBr CTS HDCC NMA-HDCC IR 4 2. 2 2. 2. 1 HTCC 24 h 2. 2. 2 1 Tab. 1 1 Inhibitory ratios of cotton fibers treated with different antibacterial agents / % 30 95. 1 HTCC 96. 2 HDCC 97. 9 NMA-HTCC 99. 0 82. 9 NMA-HDCC 99. 3 85. 3 4 Fig. 4 CTS HDCC NMA-HDCC IR Comparison of IR spectra between CTS HDCC and NMA-HDCC CTS HDCC CTS 1 595 cm - 1 CTS N H 1 468 cm - 1 CH 3 C H 2 924 2 855 cm - 1 CTS 3 400 cm - 1 O H N- 3 480 cm - 1 N H 3 264 cm - 1 O H NMA-HDCC 1 661 cm - 1 C O 1 626 cm - 1 C C NMA-HDCC NMA HDCC 1 95% NMA-HDCC
100 32 2. 2. 3 30 1 30 2 g / L NMA-HDCC 2 g / L 2. 3. 2 HDCC HTCC 2 g / L 5 min 6 NMA-HDCC NMA-HTCC NMA-HDCC NMA- HTCC 2. 3 NMA-HDCC 30 85% 70 4 min Fig. 6 2. 3. 1 NMA-HDCC 6 140 5 min 140 NMA-HDCC 120 NMA-HDCC 5 150 140 6 Effect of baking temperature on antibacterial durability 2. 3. 3 2 g / L 140 7 5 NMA-HDCC Fig. 5 Effect of concentration of NMA-HDCC on antibacterial durability 5 2 g / L NMA-HDCC NMA-HDCC NMA-HDCC 7 NMA-HDCC Fig. 7 Effect of baking time on antibacterial durability
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