CAJ | 학술논문

在加热条件下，通过添加不同量的氢氧化钠对黄原胶进行改性处理，研究不同氢氧化钠用量对黄原胶物理性能的影响，并探讨不同改性程度的黄原胶在棉织物活性染料印花中的印制性能.结果表明，随着氢氧化钠用量的增加，改性程度逐渐增大，黄原胶的表观粘度及特性粘度逐渐减小；在棉织物活性染料印花中，与未改性黄原胶相比，改性黄原胶的透网量和织物表面得色量分别提高30%~50%和32%~57%，当n(氢氧化钠)∶n(黄原胶重复结构单元)=0.802∶1~1.210∶1时，可以印制得色均匀的块面，满足印制要求.
재가열조건하，통과첨가불동량적경양화납대황원효진행개성처리，연구불동경양화납용량대황원효물이성능적영향，병탐토불동개성정도적황원효재면직물활성염료인화중적인제성능.결과표명，수착경양화납용량적증가，개성정도축점증대，황원효적표관점도급특성점도축점감소；재면직물활성염료인화중，여미개성황원효상비，개성황원효적투망량화직물표면득색량분별제고30%~50%화32%~57%，당n(경양화납)∶n(황원효중복결구단원)=0.802∶1~1.210∶1시，가이인제득색균균적괴면，만족인제요구.
Xanthan gum was modified by adding different amount of sodium hydroxide under heating con-dition. The effects of sodium hydroxide dosage on the physical properties of modified xanthan gum were dis-cussed. In addition, the printing performances of modified xanthan gum on cotton printed with reactive dyes were investigated. The results showed that the modification degree increased while the apparent viscosity and intrinsic viscosity gradual y decreased with sodium hydroxide dosage increasing. Compared with the native xan-than gum, the paste add-on and color yield of modified xanthan gum on cotton printed with reactive dyes raised by 30%~50% and 32%~57%, respectively. The uniform color patterns could be achieved to meet the printing requirements when n(sodium hydroxide)∶n(repeated structural unit of xanthan gum)=0.802∶1~1.210∶1.