915变性淀粉标签粘合剂的制备及性能

本文介绍水溶性变性淀粉标签粘合剂的制备方法和性能特点等，该粘合剂用于啤酒等灌装线高速（25000瓶／小时）贴标，贴标率高、干燥速度快、不掉标、易除标，可完满地用于目前国内所用的各种贴标机．     

高强度快干变性淀粉粘合剂的研究及在纸制品包装中的应用

本文介绍了高强度快干变性淀粉的制备原理和工艺,以及用该变性淀粉调配瓦楞纸板用粘合剂的方法和应用情况。讨论了变性淀粉粘合剂的初粘力,干燥速度等并与普通淀粉粘合剂作了比较。     

淀粉型彩喷纸专用粘合剂的应用

介绍了彩喷纸粘合剂的应用情况,通过合成的不同类型的淀粉作为粘合剂在彩喷纸中的应用,比较不同类型的淀粉应用效果,发现粉体醚化型淀粉在作为彩喷纸的粘合剂方面效果较好.     

快干瓦楞纸箱淀粉粘合剂的制备

本文介绍了瓦楞纸箱淀粉粘合剂在室温下的制备原理，配方及工艺并对各种粘合剂的干燥速度进行了比较。     

新型淀粉粘合剂的研制及其应用

考查了淀粉酸性氧化阶段和糊化阶段的各个工艺参数对制品性能的影响,确定了最佳工艺条件。研制了新型多用途淀粉粘合剂,并对其性能进行了测试。结果表明,新型淀粉粘合剂综合性能优于一般淀粉粘合剂,它不仅适用于纸箱、纱管等纸品的粘合,还可用作对外观要求较高的内墙涂料用粘合剂。     

改性氧化淀粉粘合剂的制备

用脲醛树酯对氧化淀粉粘合剂改性,从而克服了普通淀粉粘合剂初粘性较低、干燥速度慢、稳定性差的弱点,保存期从几天延长至40天。     

我国瓦楞纸箱用玉米淀粉粘合剂的进展

介绍了玉米淀粉粘合剂的一般制备方法，及近年来我国玉米淀粉粘合剂的研制动向。     

快干型玉米淀粉粘合剂的研制

采用在１％ＰＶＡ溶液中制备玉米淀粉粘合剂，并加入钠基膨润土和聚丙烯酰胺进行改性，制得的玉米淀粉粘合剂自然干燥速度较快。     

糊化淀粉粘合剂新型配方的研究

本文确定了糊化淀粉粘合剂的新配方，使其与同类粘合剂相比具有粘接力强、保管期长、制胶成本低，时间短，设备要求简单等特点。     

膨化玉米淀粉粘合剂的制备方法

介绍了膨化玉米淀粉的制备方法 ,膨化玉米淀粉粘合剂的配方及生产工艺。讨论了膨化条件 ,硼砂、聚乙烯醇、膨润土对膨化玉米淀粉粘合剂性能的影响     

改性水溶性聚氨酯胶黏剂

主要介绍了改性水溶性聚氨酯胶黏剂应具备的特点,影响其使用性能的因素,对其性能的改进方法等做了一些阐述,结合实际工作经验得出以下结论：发展改性水溶性胶黏剂的最终目的,是取代目前正在大量使用的高污染的双组分溶剂型聚氨酯胶黏剂,也是水溶性聚氨酯的主要发展方向。良好的具有应用价值的水溶性聚氨酯胶黏剂体系必须同时具备3个基本要素：（1）具有符合不同应用需求的各项性能;（2）具有良好干燥成膜及涂敷加工性能;（3）优良的水中稳定性。     

Evaluation of adhesion properties of blends of cottonseed protein and anionic water-soluble polymers

There is increasing interest in agro-based, biodegradable and eco-friendly wood adhesives as partial replacements for petroleum-based adhesives. In this work, we studied the adhesion of cottonseed protein isolate (CPI) blended with several anionic water-soluble polymers. Anionic vinyl polymers studied included poly(acrylate), poly(acrylate-co-acrylamide), poly(vinyl sulfate), poly(vinyl sulfonate), and poly(vinyl phosphonate). Anionic polysaccharides studied included three types of carrageenan, carboxymethyl cellulose (CMC), low-methoxy pectin, alginate, and chondroitin sulfate. In general, the adhesive strength of CPI increased with the addition of anionic polymer up to a certain level and then decreased with further polymer addition. Different anionic polymers showed different enhancements. The best result for vinyl polymers was observed for the CPI/poly(vinyl sulfate) blend, which exhibited a 30% improved dry strength over CPI alone. The best results for the polysaccharides were obtained for the CPI/CMC and CPI/pectin blends, with improvements in dry adhesive strength over the CPI control of 66% and 50%, respectively. The CPI/CMC and CPI/pectin blends also showed improved hot water resistance. These findings suggest that the CPI/anionic polymer blends might be useful components in biobased wood adhesive formulations.     

Biodegradable self-adhesive tapes with starch carrier

The disposed pressure-sensitive adhesive (PSA) tape widely used in daily life has been contaminating the environment and producing the vastly non-degradable trash. In this pioneering work, the advanced biodegradable pressure-sensitive double-coated tape containing starch carrier and water-soluble partially degradable modified pressure sensitive adhesive is architecturally designed and fabricated. The results have illustrated the excellent tack and peel adhesion of these newly constructed biodegradable self-adhesive tapes, and high thermal shear strength. Most importantly, the complete biodegradability of starch carrier and partially biodegradability of modified acrylic pressure-sensitive adhesives (PSA) have been confirmed experimentally. This environmentally friendly technology based on the starch resource utilization and novel water-soluble PSA will have great potentials for diverse applications such as the paper industry for manufacturing of ecological biodegradable product, the production of water-soluble biodegradable labels, medical tapes and biomedical electrodes.     

Synthesis and adhesive property study of polyoxetanes grafted with catechols via Cu(I)-catalyzed click chemistry

Mussel-inspired catechol-containing polymers have drawn great attention due to their outstanding adhesive properties. Catechol-containing polyethylene glycol (cPEG) is a well-studied catechol-containing polymer used for tissue repair. Nevertheless, catechols can only be attached to the chain ends of polyethylene glycols thus the bonding strength of the resulting polymers is limited. Aiming at solving the problem, a series of clickable polyoxetane copolymers with grafted catechol moieties were synthesized in an efficient manner. Upon addition of FeCl₃ as the cross-linker, strong bonding strength of the adhesive was achieved. Polymer containing 15.5 molar percent of catechol showed the strongest bonding strength up to 5.59 MPa on sanded stainless steel. It was found that the triazole groups also contributed to the overall adhesive performance. This polyoxetane-based adhesive also displayed strong bonding ability to a variety of other substrates including porcine skin.     

EVA与PE共混物接枝MAH的粘合性能研究

研究了在有机过氧化物的存在下，乙烯－醛酸乙烯和聚乙烯共混物与马来酸酐接枝共聚，共接枝物作为热熔胶的基础聚合物，探讨了两种聚合物的比例，单体、松香和石蜡的用量对粘接性能的影响，获得一种对金属、塑料、木材、纤维织物均有较强粘接力的热熔胶粘剂。     

Surface modification using bio‐inspired adhesive polymers based on polyaspartamide derivatives

The catechol functional group of dopamine (3,4‐dihydroxyphenethylamine) has the ability to form strong adhesive bonds to inorganic and organic surfaces in aqueous environments. In this study, novel adhesive polyaspartamides containing catechol pendant groups were synthesized from polysuccinimide through successive aminolysis reactions with quantitative dopamine and ethylenediamine. The adhesion and crosslinking of dopamine‐modified polyaspartamide in aqueous alkaline media was used successfully to modify the surface of various materials (including synthetic polymers, metals, metal oxides, ceramics) using a simple immersion method. Contact angle measurements, SEM and X‐ray photoelectron spectroscopy of the modified surfaces were used to verify the surface coating on a variety of materials with very different inherent wetting properties. These novel biocompatible polymers have potential industrial and biomedical applications as adhesives or coating materials for functional surface modification. Copyright © 2011 Society of Chemical Industry     

Mechanical property enhancement of non‐bonding electrospun mats via adhesive

In the present study, the effect of adhesive on the morphology of different electrospun polymeric mats was investigated. The modification of two polymers, poly(methyl methacrylate) and poly(vinyl chloride), was carried out by blending the polymers with different amounts of poly(butyl acrylate) (PBA) adhesive to investigate the effect of different amounts of adhesive with heat hardener in hybrid mats. The introduction of various concentrations of PBA into different polymer solutions led to the formation of point‐bonded electrospun fibrous mats. Scanning electron microscopy images indicated that point‐bonded polymer/adhesive fibers were uniformly distributed throughout the mats. Fourier transform infrared spectrometry, contact angle measurements and thermogravimetric analysis were used to study the different properties of the hybrid mats. The tensile strength of the blended fibrous electrospun mats was increased effectively. This enhancement of the mechanical properties of the mats due to the presence of adhesive increases the number of potential applications of the electrospun mats, especially for mechanically weak polymers. Copyright © 2012 Society of Chemical Industry     

醇溶型聚乙烯醇缩混合醛（丁烯醛和乙醛）的制备

在温度不高于60℃下,以聚乙烯醇为主要原料,乙醛和丁烯醛为缩醛化试剂,当聚乙烯醇的缩醛度达到50．8％以上时,缩醛化产物就可以在乙醇溶剂中溶胀溶解形成均一溶液。该醇溶型聚乙烯醇缩混合醛胶达到最大粘接强度仅需6h,比水溶性胶粘剂的干燥时间缩短18h,并且其耐水性明显高于水溶性的聚乙烯醇缩丁烯醛胶。通过对薄膜的红外分析,可以看出过硫酸钾,可以打开缩醛化产物的碳碳不饱和双键,也使薄膜变脆。     

The synthesis and adhesive performance of the poly(N-benzyloxycarbonyl-3,4-dihydroxyphenylalanine) derived from 3,4-dihydroxyphenylalanine

Adhesive polymers, which contain an unusual amino acid, 3,4-dihydroxyphenylalanine (DOPA), can bind strongly to all organic or inorganic surfaces. However, due to DOPA’s poor solubility in organic solvents, it is difficult for us to get desired adhesive polymers. In this paper, poly(N-benzyloxycarbonyl-3,4-dihydroxyphenylalanine) (PNBD) was synthesized based on the modified L-DOPA. Gel Permeation Chromatography was used to analyze the molecular weight of PNBD. The structure of PNBD was characterized by Fourier Transform Infrared Spectroscopy and Hydrogen-1 Nuclear Magnetic Resonance. The adhesive properties of PNBD were determined by lap shear tensile strength tests. The results indicated that PNBD was prepared successfully and had formidable adhesive performance on the various substrates.     

Fabrication and evaluation of one-component core/shell structured latex adhesives containing poly(styrene) cores and poly(acrylate) shells

A one-component, non-crosslinked, and ambient temperature-cured core/shell (CS) structured waterborne poly(styrene-acrylate) (PStA) latex adhesive was prepared by two-stage seeded emulsion polymerization. The first-stage polymers were non-polar styrene-based copolymers with T_gs ranging from 86 °C to 41 °C and the second-stage polymer was polar acrylate-based copolymer having a T_g of 8 °C. The effect of latex particle morphology and film microstructure on the CS structured PStA latex adhesive was examined by evaluating film thermal properties and mechanical performance. The results have shown that incorporation of soft shell polymers into hard core polymers can improve adhesive properties without compromising film-forming ability. Wood adhesive performances of latex adhesive were measured by shear strength and boiling water resistance of glued wood blocks. The utilization performances of the one-component CS structured PStA latex adhesive were found to largely depend on CS morphological character and the interfacial compatibility between various polymeric constituents, demonstrating that fabrication of CS latex particles provides a promising approach to realize high-performance latex adhesives.