淀粉基胶粘剂在建筑业中的应用

综述了氧化淀粉、交联淀粉、多孔淀粉、接枝共聚淀粉和复合变性淀粉在内墙涂料中的使用性能及应用现状,并对其应用前景作出展望,认为影响淀粉基建筑涂料品质的关键问题是耐水性、防霉、胶膜强度等,可以通过上述变性淀粉与其他基料的复配,或进一步复合变性等措施加以解决。     

变性淀粉的制备及应用研究进展

综述了目前淀粉变性的主要方法,包括化学变性、物理变性和复合变性。同时对变性淀粉在医药、食品、纺织等领域的应用进行了分析并对未来的发展趋势进行了展望。变性淀粉的高性能化和性能可调控化将是新一代变性淀粉的追求目标。     

变性淀粉的制备及应用研究进展

综述了目前淀粉变性的主要方法,包括化学变性、物理变性和复合变性。同时对变性淀粉在医药、食品、纺织等领域的应用进行了分析并对未来的发展趋势进行了展望。变性淀粉的高性能化和性能可调控化将是新一代变性淀粉的追求目标。     

复合交联淀粉在食品工业中的应用研究进展

复合交联淀粉以其优异的性能在食品工业中得到了广泛应用,本文综述了交联淀粉、交联醚化淀粉、交联酯化淀粉和交联氧化淀粉等复合交联淀粉的特点及其在食品工业中的应用,重点讨论了目前的研究热点及其今后的发展趋势,探讨了复合交联变性淀粉在食品工业领域的发展前景。     

一种复合琥珀酸酯淀粉的制备及其性能的研究

提供一种复合琥珀酸酯变性淀粉的制备方法,探讨变性反应前后淀粉性能的改变.以木薯淀粉、玉米淀粉为原料,以琥珀酸酐和乙酸酐为复合酯化剂,进行复合变性反应.结果表明,经过复合琥珀酸酯化反应后,淀粉糊化温度、峰值粘度等糊化特性明显提高,用此方法生产的木薯变性淀粉,峰值粘度与糊化温度均可达到马铃薯原淀粉指标要求;生产的玉米变性淀...     

变性淀粉项目建成投产

由甘肃丰收农业科技有限公司开发的2万t马铃薯变性淀粉项目已在天水市建成投产。变性淀粉被誉为“21世纪工业的味精”，它是通过物理、化学、生物等方法，改变淀粉的天然性质，增加其功能性或赋予新的特性，使淀粉更适合于工业应用，提高最终产品的品质。该公司的马铃薯变性淀粉采用代表世界先进水平的湿法生产工艺，主要产品有酯化淀粉、醚化淀粉和交联淀粉，以及通过复合变性生产的酯化-交联淀粉、酯化-交联-预糊化淀粉等。变性淀粉的用途非常广泛，在胶粘剂中主要用作水性胶粘剂的组分、增稠剂和分散剂等。     

商品变性淀粉产品的评价技术寻求合作伙伴

成果简介：淀粉的改性方式有化学、物理和酶法变性以及复合变性，生产方式有湿法、（半）干法，还可用热滚筒法、挤压法和喷雾干燥法生产预糊化淀粉，而且不同品种的原淀粉能够得到性质差别很大的产物，因此，目前国内外各个公司出产的变性淀粉品种都是非常繁多，食品、造纸、纺织、医药、精细化工等应用范围十分广泛，而且市场每年新产品不断涌现，加剧了市场竞争。我们利用积累的生产制造、检测变性淀粉的丰富经验及本校拥有的先进齐全的分析仪器，可为淀粉企业开展商品变性淀粉产品的评价及委托检测服务，为企业新产品研发起到事半功倍的效果。     

利用羧甲基淀粉钠生产仿瓷内墙涂料

羧甲基淀粉钠简称淀粉钠,代号为 CMS,它是一种变性淀粉,具有很好的水溶性,而且在常温下即可溶于水。这一特性,使它广泛用于涂料、合成洗涤、工业浆糊、壁纸胶粉等行业。用于涂料行业具有工艺简单、质量好、设备投资少等特点。CMS 用于制造涂料,主要是为了取代聚乙烯醇(PVA)。近年来,由于 PVA 价格不断上涨,使涂料成本提高。经过我们大量实验,终     

各类变性淀粉的制法和应用（续）

继本刊１９９４年第１期《各类变性淀粉的制法和应用》之后，接续介绍一批较常见的变性淀粉，包括α淀粉（预糊化淀粉）、酸变性淀粉、二醛淀粉和羧甲基淀粉等的制法和应用。     

用于木材的水性纳米复合导电涂料的制备与性能研究

选用阳离子醚化淀粉为基体,导电炭黑为导电填料,水为分散介质,采用机械共混的方法制备了水性纳米复合导电涂料,通过SEM表征了其微观结构,TG分析了其热稳定性,并研究了水性纳米复合导电涂料制备过程中不同因素对涂料涂覆性能、黏度、导电性能的影响。结果表明:制备过程中乳化时间越短、淀粉含量越大、NaOH含量越少,所得纳米复合导电涂料的黏度越大;所制备的水性纳米复合导电涂料具有良好的导电性,导电炭黑颗粒聚集体均匀地分散在阳离子醚化淀粉基体中,且随着导电炭黑含量的增加,涂层的表面方阻减小;导电涂料的热稳定性好,使用导电涂料的木板粉末喷涂效果良好,固化后表面均匀平整光滑,无明显缺陷。     

Modified tapioca starch as a rheology modifier in acrylic dispersion system

Tapioca starch was modified by esterification reaction using octenylsuccinic anhydride (OSA) to use as a rheological modifier. Effect of degree of substitution (DS = 0.01–0.04) of octenyl side chain on rheological properties of modified starch in acrylic dispersion system (ASD) was investigated. At low starch to dry acrylic ratio (0.2:100), shear viscosity at low shear rate of OSA-starch containing ASD system increased when the DS of OSA-starch increased. Thickening ability and thixotropic behavior of modified starches in acrylic dispersion system were studied at various modified starches to dry acrylic ratios (0.1–4:100). The results showed that modified starches provided good thickening efficiency. Moreover, an optimum concentration of modified starches, giving the highest thickening efficiency decreased as the DS increased. Results of rheological behavior illustrated that associative networks were formed by hydrophobic interaction between octenyl side chains and acrylic particles in acrylic dispersion system. The rheological properties of modified starches prepared in this study showed a potential in using as an associative thickener in water-based coating system.     

淀粉在涂料中的应用

介绍了氧化淀粉、交联淀粉、羟烷基淀粉以及多孔淀粉在内墙涂料、纸张涂料以及防水涂料中的一些具体应用,并对淀粉涂料的未来进行了展望.     

淀粉基食品包装膜材料的研究进展

本文就近些年来淀粉基食品包装膜的研究发展进行了综述。范围涵盖了淀粉的选择,塑化剂及其他添加剂的种类,不同的淀粉改性方法对膜性能的影响。其中直链含量高的淀粉所制备的膜具有较高的强度和较好的阻隔性能;甘油是应用最为广泛的塑化剂;不同的添加剂可以针对膜的不同性能加以改善;针对淀粉本身的缺陷进行改性可以提高其膜性能。     

甘薯变性淀粉的研制

总结了制取甘薯氧化淀粉、可溶性淀粉、酸变性淀粉和磷酸淀粉等变性淀粉的最佳工艺参数，并对这些变性淀粉的理化特性进行了研究。这些产品在食品、纺织、造纸、建筑、医药等行业具有广阔的应用前景。     

Investigation into Reactions of Starch with Monochlorotriazinyl-β-Cyclodextrin and Application of their Products in Textile Sizing

This article presents a study on the chemical modification of starch and hydrolyzed starches through their reactions with reactive cyclodextrin (RCD). Monochlorotriazinyl-β-cyclodextrin was investigated under a variety of conditions. The results obtained signify that the reaction was favored in an alkaline media rather than an acidic media, and in shorter rather than larger liquor ratios. Maximization of the reaction could also be achieved at 40°C for 60 min. Of the several alkaline catalysts used, NaOH proved to be the best when used at a concentration of 10 g/l. The reaction of starch and hydrolyzed starches with RCD was determined using a concentration of the latter. The apparent viscosity of the resulting polymeric products depends upon both the extent of reaction, expressed as a nitrogen percentage, and the degree of acid hydrolysis prior to the modification. Evidence for involvement of starch and RCD via chemical bonding was obtained through FT-IR analysis. Furthermore, the newly synthesized starch-based polymeric products were applied to a light cotton fabric and further evaluation of the sized materials was conducted by monitoring the size add-on, size removal, and strength properties of the fabric was conducted.     

An In-depth Analysis of the Mechanical,Electrical, and Drug Release Properties of Gelatin–Starch Phase-Separated Hydrogels

Gelatin–starch-based phase-separated hydrogels were prepared in this study. Corn starch, soluble starch, and hydrated starch were used as the representative starches for the preparation of the hydrogels. Bright field microscopy suggested the formation of phase-separated hydrogels. An increase in the hydrophilic nature of the starch molecules resulted in decrease in the agglomeration of the starch particles within the gelatin matrices. Fourier transform infrared study confirmed the presence of starch particles within the hydrogels. X-ray diffraction studies suggested that the higher degree of crystallinity of corn starch and soluble starch was responsible for the comparative hydrophobic nature of these starch particles. Hydrated starch was found to be amorphous in nature and can be explained by the destruction of the intramolecular associative forces. Stress relaxation and creep recovery studies indicated predominant elastic nature of the hydrogels. Hydrated starch-containing hydrogels were firmer than corn starch and soluble starch because of the better miscibility of the hydrated starch particles within the gelatin matrices. The bulk resistance of the starch-containing hydrogels was higher. This was because of the capability of the starch particles to behave as dielectric medium. Incorporation of starch particles within the gelatin matrix was found to increase the polymer relaxation-mediated drug diffusion. Metronidazole-loaded hydrogels were found to have good antimicrobial activity.     

变性淀粉—丙烯酰胺接枝共聚物的制备及其对瓦楞纸的增强作用

以硝酸铈为引发剂，合成了氧化淀粉及可溶性淀粉等变性淀粉与丙烯酰胺的接枝共聚物，详细考察了引发剂用量及淀粉性质对单体转化率和接枝率的影响。结果发现，用氧化淀粉，可溶性淀粉等变性淀粉与丙烯酰胺接枝共聚，可获得比原淀粉高得多的单体转化率和接枝率。在瓦楞纸中的使用表明，添加０．５％的氧化淀粉一丙烯酰胺接枝共聚物可使瓦楞纸的环压强度增加５２％。     

Sago starch and its acrylamide modified products as coating material on handsheets made from recycled pulp fibers

This study was carried out to determine the suitability of sago starch as a paper additive. The basic properties (i.e., pH, viscosity, and solid content) of the 5% weight over volume basis of unmodified and modified sago starch (sago starch blended with acrylamide, sago starch grafted with acrylamide in an acidic and adjusted to alkaline conditions) were determined. The starches were then used to coat laboratory handsheets made from recycled pulp fibers. The incorporation of acrylamide into sago starch through grafting significantly reduced the viscosity of the solution. Generally, coating the handsheets with unmodified sago starch significantly improved some properties as compared to the uncoated handsheets. Among the three types of sago starch modification methods, blending gave superior performance when coated on the handsheets, except for smoothness and air permeance, due to insufficient curing shown by the micrographs. FTIR spectra showed that the interactions between the blended acrylamide–starch solutions and the pulp fiber were weak. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 154–158, 2004     

淀粉/天然橡胶复合材料的力学性能研究

采用不同偶联剂对淀粉活化改性,通过直接共混法制备淀粉/天然橡胶复合材料。研究了淀粉种类、添加量及偶联剂对复合材料的拉伸性能、硬度、耐磨性的变化规律。结果表明:改性后淀粉/天然橡胶复合材料的拉伸性能、硬度、耐磨性明显增加,而改性后木薯淀粉/天然橡胶复合材料的力学性能最佳;采用质量分数为3%的有机硼偶联剂对橡胶材料的改性效果最好。