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对5种光敏剂用于硫酸盐蔗渣浆漂白进行研究,发现在同一条件下,曙红和玫瑰红光催化漂白硫酸盐蔗渣浆效果较好,在漂白过程中共轭羰基(-C=O)发生了较多断裂。EO进行光催化漂白较加AO、LF、RB和MB4种光敏剂有利于紫丁香基型木素的降解。并且在加各种光敏剂进行光催化漂白过程中,纤维素主链的特征吸收峰都发生了一定程度的下降,而加曙红、玫瑰红和亚甲蓝时吸收峰下降较大。
Five photosensitizers were used to study the bleaching of bagasse pulp. It was found that under the same conditions, the eosin and rose red photocatalytic bleached bagasse had better effect, and the conjugated carbonyl (-C = O) occurred during bleaching More fractures. EO photocatalytic bleaching more AO, LF, RB and MB4 photosensitizer is conducive to the degradation of lilac type lignin. In the process of photocatalytic bleaching with various photosensitizers, the characteristic absorption peaks of cellulose main chains all decreased to a certain degree, while the absorption peaks of eosin, rose and methylene blue decreased greatly.