The effects of desizing on the cellulosic substrate preparation process
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1 The effects of desizing on the cellulosic substrate preparation process Matteo Scaburri F.T.R. Forniture Tessili Riunite SpA 1
2 BIO-Preparation of cotton fabrics Enzymatic desizing Pad-Batch T = C time = 3-12 hours Bleaching Pad-Steam T = C time = 3-20 minutes washing washing 2
3 For our study we used this preparation system largely applied by cotton companies because of its Practicatility Semplicity Versatility Easiness Cheapness Safety 3
4 Insufficient degree of preparation Poor quality of materials High quantity of impurities Lower costs of production Higher working speed 4
5 The efficacy of α-amilase enzymes could be influenced by different factors ph value Temperature Time Chemicals compatibility 5
6 ENZYMATIC DESIZING PROCESS Standard 3 ml/l amilolitic enzyme (α-amilase batteric 240 KNU) 5 ml/l detergent (ethoxylated fatty alcohol) Modification Acids Alkali Reducing agents Oxidizing agents Enzymes N 2 FTR system 6
7 ENZYMATIC DESIZING PROCESS Hydrochloric 0,5 1,5 ml/l Acetic 1,0 3,0 ml/l Formic 0,5 1,5 ml/l Citric 1,0 3,0 g/l HEDP 0,5 1,5 ml/l DTPMP 0,5 1,5 ml/l ATMP 0,5 1,5 ml/l Acids Modification 7
8 ENZYMATIC DESIZING PROCESS NaOH 36 Bè ml/l + 5 g/l Sodium persulphate KOH 38 Bè ml/l + 5 g/l Sodium persulphate Alkali Modification 8
9 ENZYMATIC DESIZING PROCESS Modification Na Hydrosulphite 1 3 g/l Reducing agents Na Metabisulphite 1 3 g/l 9
10 ENZYMATIC DESIZING PROCESS Pectinase acid 1 3 ml/l Modification Pectinase alkaline 1 3 ml/l Xylanase Laccase Cellulase 1 3 ml/l 1 3 ml/l 1 3 ml/l Enzymes 10
11 ENZYMATIC DESIZING PROCESS Modification COMPLEX IRON NEU COMPLEX CA 5 ml/l 2 ml/l FTR 1 system COMPLEX IRON 11
12 ENZYMATIC DESIZING PROCESS Modification NaOH 36 Bè ml/l + 5 ml/l INNOVA 2000 FTR 2 system INNOVA 12
13 Tests have been carried out on 100% cotton fabric 20/24 cloth 156 g/m 2 5) Continuous washing 4) Pad-Steam bleaching 15 minutes at 99 C 45 ml/l H 2 O vol. 25 ml/l NaOH 30% 6 ml/l stabilizer 3 ml/l detergent 1) Padding at 60 C with desizing recipes 2) Stock for 6 hours at 60 C 3) Continuous washing 13
14 Evaluation of recipes performances after desizing and bleaching process Analytical controls of natural and artificial subtances on cotton fiber Residual starch quantity (Tegewa method) Residual fats-waxes quantity (Soxhlet-petroleum ether) Pectine quantity (oxalate extraxtion-gravimetric determination) Iron ions quantity (colorimetric determination) Evaluation of degree of preparation on the fabric Degree of hydrophility (Tegewa Drop-Test method) Degree of desizing (Tegewa method) Degree of whiteness (Berger-Ganz formula) Degree of cellulose polymerisation (Cuen viscosity method) 14
15 ENZYMATIC DESIZING PROCESS Evaluation of Standard recipes performances Standard After enzymatic desizing process After bleanching Pad-Steam process low good degree of of preparation 3 ml/l amilolitic enzyme (α-amilase batteric 240 KNU) 5 ml/l detergent Fats-waxes (ethoxylated fatty Pectins alcohol) Iron ions Starch -25% elimination -66% elimination -22% elimination 5 Tegewa scale Good Hydrophility Good Desizing Good Whiteness 15
16 RESULTS 16
17 HYDRO PHILITY Drop Test determination Standard COMPLEX IRON system H-ac INNOVA system A-ac F-ac C-ac HEDP-ac DTPMP-ac Drop penetration time (sec.) ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 17
18 STARC H re sid ua l Te g e wa so lution Te st Tegewa scale Standard H-ac A-ac COMPLEX IRON system F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 INNOVA system 18
19 IRON ions residua l Colorimetric determination (1,10 fenantrolina) 90% 80% 70% Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 Elimination (%) 60% 50% 40% 30% 20% COMPLEX IRON system INNOVA system 19
20 PEC TINS resid ua l oxalate extraxtion-gravimetric determination 100% 90% Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 Elimination (%) 80% 70% 60% 50% 40% COMPLEX IRON system INNOVA system 20
21 WHITENESS Deg ree Be rg er form ula Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 BERGER formula COMPLEX IRON system INNOVA system 21
22 Final conclusions The ACIDS chemicals add to an enzymatic desizing 22
23 Encrease the elimination of IRON ions residua l Colorimetric determination (1,10 fenantrolina) 90% 80% 70% Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 Elimination (%) 60% 50% 40% 30% ACIDS 20% 23
24 Encrease the elimination of PEC TINS resid ua l oxalate extraxtion-gravimetric determination 90% 80% Elimination (%) 70% 60% 50% Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 ACIDS 40% 24
25 Final conclusions The ACIDS chemicals add to an enzymatic desizing The REDUCING chemicals add to an enzymatic desizing 25
26 Encrease the elimination of IRON ions residua l Colorimetric determination (1,10 fenantrolina) 90% 80% 70% Elimination (%) 60% 50% 40% REDUCING Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 30% 20% 26
27 Final conclusions The ACIDS chemicals add to an enzymatic desizing The REDUCING chemicals add to an enzymatic desizing The ENZYMES add to an enzymatic desizing 27
28 Encrease the elimination of PEC TINS resid ua l oxalate extraxtion-gravimetric determination 100% 90% ENZYMES Elimination (%) 80% 70% Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 60% 50% 40% 28
29 Encrease the elimination of STARC H re sid ua l Te g e wa so lution Te st 9 8 ENZYMES Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 Tegewa scale 29
30 Final conclusions The ACIDS chemicals add to an enzymatic desizing The REDUCING chemicals add to an enzymatic desizing The ENZYMES add to an enzymatic desizing The ALKALINE chemicals add to an enzymatic desizing 30
31 Encrease the degree of HYDRO PHILITY Drop Test determination 00 Drop penetration time (sec.) ALKALI 60 Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 31
32 Final conclusions The ACIDS chemicals add to an enzymatic desizing The REDUCING chemicals add to an enzymatic desizing The ENZYMES add to an enzymatic desizing The ALKALINE chemicals add to an enzymatic desizing The application of INNOVA system to an enzymatic desizing 32
33 Encrease the degree of HYDRO PHILITY Drop Test determination 00 Drop penetration time (sec.) INNOVA 60 Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 33
34 STARC H re sid ua l Te g e wa so lution Te st INNOVA better Tegewa scale Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 34
35 IRON ions residua l Colorimetric determination (1,10 fenantrolina) 90% 80% Elimination (%) 70% 60% 50% 40% Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 INNOVA better 30% 20% 35
36 PEC TINS resid ua l oxalate extraxtion-gravimetric determination 100% 90% INNOVA Elimination (%) 80% 70% 60% better Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 50% 40% 36
37 WHITENESS Deg ree Be rg er form ula Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 BERGER formula INNOVA better
38 Final conclusions The ACIDS chemicals add to an enzymatic desizing The REDUCING chemicals add to an enzymatic desizing The ENZYMES add to an enzymatic desizing The ALKALINE chemicals add to an enzymatic desizing The application of INNOVA system The application of COMPLEX IRON system 38
39 Encrease the degree of HYDRO PHILITY Drop Test determination 00 Drop penetration time (sec.) COMPLEX IRON 60 Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 39
40 Encrease the elimination of IRON ions residua l Colorimetric determination (1,10 fenantrolina) 90% 80% 70% Elimination (%) 60% 50% 40% COMPLEX IRON Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 30% 20% 40
41 Encrease the elimination of PEC TINS resid ua l oxalate extraxtion-gravimetric determination 100% 90% Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 Elimination (%) 80% 70% 60% 50% COMPLEX IRON 40% 41
42 Encrease the degree of WHITENESS Deg ree Be rg er form ula 63 Standard H-ac A-ac F-ac C-ac HEDP-ac DTPMP-ac ATMP-ac NaOH KOH Pec-ac Pec-alk Xyl Lacc Cell Hysul Bisul FTR 1 FTR 2 BERGER formula COMPLEX IRON
43 Final conclusions The ACIDS chemicals add to an enzymatic desizing The REDUCING chemicals add to an enzymatic desizing The ENZYMES add to an enzymatic desizing The ALKALINE chemicals add to an enzymatic desizing The application of INNOVA system The application of COMPLEX IRON system encrease the efficacy of the enzimatic desizing process 43
44 Thank you very much for your kind attention 44
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