ISBN : 978-602-17761-4-8
16
Proceedings of 2
nd
REPTech Crowne Plaza Hotel, Bandung, November 15-17, 2016
© 2016 Published by Center for Pulp and Paper through 2
nd
REPTech
Table 1. The Absorption of Methylene Blue Dyestuff
Batching Hours
Sodium Hydroxide N
Sodium Chloracetate N 2
3 4
2 6
92.23 93.52
93.97 8
93.15 94.32
94.76 10
94.01 95.20
95.61 12
94.19 95.37
95.73 4
6 92.44
93.96 94.04
8 93.16
94.43 95.33
10 94.09
95.77 96.24
12 94.27
95.82 96.27
6 6
92.66 94.00
94.34 8
93.21 95.44
95.74 10
94.40 95.87
96.52 12
94.53 95.95
96.61 8
6 92.76
94.32 94.37
8 93.27
95.44 95.82
10 94.62
95.96 97.56
12 94.66
96.01 97.72
10 6
93.18. 94.39
94.64 8
94.43 95.77
96.02 10
94.89 96.22
97.81 12
94.91 96.29
97.94 Raw material
staining
From the test results shown that the concentration of sodium chloracetate up to 3N, sodium hydroxide to 8N and batching time up to 2 hours, with the use of higher concentration of sodium hydroxide and the
longer time of batching in a certain extent, the absorption of methylene blue dye is higher. The amount of the dye absorbed on cellulose, not only indicate carboxymethylation reactions that
occur, but also showed the presence of cellulose damage. Degradation of cellulose molecules in the presence of oxygen in sodium hydroxide see igure 2, will enter the molecular chains of cellulose on
the bond between the hydrogen and carbon atoms in position 1 glucose groups, consequently glucose circle will open and a hydrogen atom at position 1 will migration to the carbon atom at position 5,
forming acid group at position 1 but remain bound to the glucose group next to it. The presence of sodium ions in solution resulting ester hydrolyzed form,thus breaking the ester bond resulting in damage
oxycellulose igure 2 which also absorb the methylene blue dyes. [1]
3. Tensile Strength
The Results of tensile strength warp and weft direction fabric can be seen in table 2. The test results shown that the Carboxymethylation process occurs the shrinkage of fabric, that means pick of yarncm
warp and weft of fabric increased thereby increasing the tensile strength of the fabric, the highest tensile strength test results obtained on the use of a combination of 3N chloroacetate and 8N sodium hydroxide
and batching time of 2 hours. The result showed: Warp direction of tensile strength 25 kg or increase of 8.2 from the beginning and the weft direction of tensile strength fabric 17.9 kg or increase 4.1.
The analysis of variances turns out, that the variations of sodium hydroxide, sodium chloroacetate concentration and batching time process have effected on the tensile strength of the fabric. At the optimal
conditions, the increasing of tensile strength due to cellulose ibers swollen and helps substitution reaction of carboxymethylation, the iber damage is smaller compared than other conditions.
ISBN : 978-602-17761-4-8
17
Proceedings of 2
nd
REPTech Crowne Plaza Hotel, Bandung, November 15-17, 2016
© 2016 Published by Center for Pulp and Paper through 2
nd
REPTech
The increasing of tensile strength after carboxymethylation process caused by the increase of the hydrogen bond and Van der walls bond, that affecting to shrinkage of fabric dimensional. , consequently
pick of fabric density warp density and weft density will be increased [2, 12]. On the use of sodium chloracetate, the longer of batching time tensile strength tends decreased.
This is because the use of sodium chloracetate which is an acid salt, cellulose can be damaged by acid is forming hydrocellulose and will be produced a shorter molecular chain. The outbreak of some
glucosidal bond between units, will cause hydrolysis of cellulose, reduced unit of glucose in the chain of cellulose can occur tensile strength decrease.
The sodium hydroxide is a strong alkaline, the erosion of polyester fabric turns out that the tensile strength decline and loosed the weight. At the pore where the hydrolysis happen, the polymeric molecules
are not compact, molecular bonds weakened so that the tensile strength of the fabric will decreases [3],
4. Polyester Weight Reduction
