无污染漂白--造纸工业可持续发展的要求

分析了造纸业在可持续发展中的重要地位，并从可持续发展角度论述了纸浆无污染漂白的重要性和必要性，指出无污染漂白是解决制浆工业面临的化工药品浪费大、污染严重等问题的有效途径，并提出了发展无污染漂白技术的对策。     

建议开发的印染助剂新品种

根据文献介绍，从提高染色牢度、节能节水以及多道工序合一工艺等方面，阐述了国外已经研制开发的新型助剂品种，为国内的开发研究提供参考．     

稳定性二氧化氯的制备及应用

介绍了稳定性ClO2的主要制备方法及其应用。ClO2可广泛用作水处理及食品和日用化学工业中的消毒剂，也可用作纸张的漂白剂。     

保险粉漂白机械木浆的生产实践

针对部分纸浆厂家对保险粉漂白机木浆的疑虑，介绍了广州造纸有限公司的生产应用情况，分析了保险粉漂白效果、协同配方以及设备腐蚀等问题     

Changes in the catechin and epicatechin content of grape seeds on storage under different water activity (aw) conditions

Storage effect on antioxidant content and capacity of grape seeds under different a_w conditions (a_w 0.33; 0.53; 0.75/50 days, 25 °C) was examined. Total phenol content (determined by the Folin–Ciocalteu method) decreased during storage though changes were trivial for samples stored at 33% or 53% RH. High level of humidity (75%) accelerated degradation and resulted in a ∼50% reduction of total phenol content. Minor loss of the DPPH radical scavenging activity (%RSA) of the extracts was observed. Catechin and epicatechin content monitored by RP-HPLC was reduced during storage, particularly at 75% RH. Epicatechin content proved to be less sensitive to water activity conditions than catechin content. Results of various in vitro assays (Folin–Ciocalteu, FRAP, DPPH, ABTS, CBA, ORAC and copper induced liposome oxidation) did not support difference in terms of resistance to oxidation. Based on the continuous release of gallic acid, our finding was related to hydrolytic reactions. Control of a_w of grape seeds can be of practical importance for the wine industry.     

蜥蜴皮制革工艺研究

本文介绍了蜥蜴皮制革的若干技术要点，重点介绍了漂白褪色的方法。     

棉针织物直接染料煮漂染一浴法工艺的探讨

介绍台湾产高级直接染料煮、漂、染一浴法的特点、优点,及其适应的工艺条件,并与常规工艺作了分析比较。     

提高纸浆H2O2漂白效率的新途径

考察了麦草浆H2O2漂白过程中采用柠檬酸钠，沸石、蛋白石以及柠檬酸钠与沸石或蛋白石共用作为保护剂替代传统稳定剂和螯合剂的可能性。研究发现柠檬酸钠及柠檬酸钠与蛋白石共用在降低H2O2消耗和提高漂白效率方面具有明显效果，与无添加剂的H2O2漂白相比，纸浆白度提高4％－6％ISO，H2O2消耗降低20％－30％，其改善漂白效果的能力与传统添加剂相当，柠檬酸钠与蛋白石共用的添加工艺成本较低，有对环境友好，是提高纸浆H2O2漂白效率的一条新的有效途径。     

甲壳素纤维漂白工艺初探

初步探讨了甲壳素变黄的原因，讨论了各种漂白剂、漂浴温度和pH值等工艺条件对漂白效果的影响，并就处理前后的白度进行比较。结果表明，甲壳素变黄的原因是氧化剂对甲壳素的影响，从而为制订甲壳素混纺织物预处理工艺提供可靠的依据。     

Dissolving pulp from TCF bleached Acetosolv beech pulp

Beech wood samples subjected to pulping in HCl‐catalysed acetic acid media (Acetosolv process) under selected conditions were bleached using several Totally Chlorine Free (TCF) sequences including peracetic acid (Paa), alkaline (E), oxygen (O), chelating (Q) and peroxide (P) treatments. PaaEQPP sequences starting from acetic acid media led to pulps with poor brightness, which was improved when the same sequence was carried out starting from aqueous media. An EOQPP sequence led to a pulp with acceptable properties, which were improved by a optimised EOQPaaP sequence, in which a fully bleached pulp was obtained at a SCAN viscosity of 604 cm³ g^?1. EOQPaaP‐bleached pulp was explored for carboxymethyl cellulose (CMC) manufacture employing heterogeneous conditions in isopropanol media, and a CMC with a degree of substitution of 1.16 was obtained. Copyright © 2004 Society of Chemical Industry