臺灣博碩士論文加值系統

硫化染料之染色係屬還原染色法。染料不溶於水, 須以硫化鈉使其溶解。
硫化染料與硫化鈉混合比為1/1時,可達最大溶解度。且可見光光譜圖之最
大吸收度隨硫化鈉液濃度之增加而增高, 最大吸收波長隨硫化鈉之高低溶
液濃度呈現位移現象。鑑於本省紙廠近年來廢水排放標準日益嚴格之今
日, 須減少廢水中有色物質之排出。硫化染料對纖維之親合力極佳, 染色
時較紙廠慣用之直接染料者為好, 染料流失率隨染料添加量之增加而遞
減, 直接染料於 3%後染料大量流失至白水中。直接染料色紙經1∼2小時
之光照所得色差相當於硫化染料色紙3 小時光照者。可知硫化染料色紙光
堅牢度較直接染料者為佳, 可用於耐較長時間之戶外用仿籐紙所編織之紙
帽、紙蓆、紙窗簾等用途。經溶解之硫化染料染液(pH為13), 染色時隨染
料添加量之增加愈不具上膠度。經調酸處理後改以pH值4、7、9者施以酸
性上膠,皆具上膠之效,pH值為4者隨染料添加量之增加, 漿液pH值為4.5
時,具最大上膠度。硫化染料色紙經5∼10天於105℃烘箱中高溫乾熱處理
後, 除硫化黃色紙b*值下降外,硫化藍、紅色紙隨之增大。上膠色紙較不
上膠者色差值略大, 且耐摺力損失量上亦大之。硫化染料色紙經次氯酸鹽
漂液脫色之時間以最初半小時反應較快, 已達相當之白度。且經脫色後之
紙張, 其耐摺力與引張力隨次氯酸鹽漂液用量之增加而呈遞減之趨勢。

When using sulfur dyestuffs，the disadvantages are that not
soluble in water．Usually，sodium sulfide are available for
dissolving sulfur dyes. Upon sulfur dyes'dissolving test，one
hour mixing time and the mixture ratio of sulfur dye to sodium
sulfide，(1:1,w/w) showed the maximum solubility．The visible
spectrum of 1% sulfur dyes' sodium sulfide solution indicated
that the wavelength of maximum absorbance was shift and
affected by series concentrations of sodium sulfide applied．
Under the same UV irradiation time i.e.，1∼2 hrs．Sulfur dyes
showed the superior lightfastness to direct dyes． Therefmore，
the sulfur dyestuff containing colored paper seems suitable as
the raw materials to make outdoor use paper cap， paper mat and
paper curtains etc． Upon carrying out the acidic sizing test
of sulfur dye containing paper，we found out that the sizing
degree decreased with increasing sulfur dyestuffs' addition．
Once the pH of the sulfur dyes containing stock drops to 4.5 ，
the maximum sizing degree will be resulted． The sulfur
dyestuff dyed papers which are aged under accelerated
conditions i.e.，105℃ for 5∼10 days exhibited a decrease in
b* value of CIE L*a*b* for Sulfur Yellow 9 and an increase for
Sulfur Blue 13 and Sulfur Red 12．In addition，the sized sulfur
dyestuff containing paper showed greater color differences and
apparent endurance loss comparing to those of unsized one． The
sulfur dyestuff dyed papers which were decolorized with the
addition of NaClO showed much improvement in brightness gains
within the initial half an hour，in the meantime，the fold
endurance decreased with the increase in hypochlorite dosage.