Preparation and application of cationic blocked waterborne polyurethane as paper strength agent
Preparation and application of cationic blocked waterborne polyurethane as paper strength agent
复制标题
阳离子封端水性聚氨酯纸张强力剂的制备及应用
DOI：
10.1007/s10965-013-0222-5
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发表时间：
2013-07
影响因子：
2.8
通讯作者：
Min Liu
中科院分区：
文献类型：
--
作者：
Xiaojuan Lai;Yuanbo Song;Min Liu
以咪唑为阻隔剂，N-[（1,1-二甲基-2-乙酰基）乙基]-β-二羟乙基氨基丙酰胺（DDP）、异戊酮二异氰酸酯（IPDI）、聚己内酯乙二醇（PCL）和双酚A为原料，以N-甲基二乙醇胺为亲水性扩链剂，制备了阳离子封隔型水性聚氨酯（CBWPU）纸强剂。研究了堵塞率和CBWPU用量对处理后纸张物理性能的影响。利用傅里叶变换红外光谱仪（FT-IR）和扫描电子显微镜（SEM）对CBWPU的化学结构和纸表面形貌进行了表征。结果表明，随着堵塞率的增加和CBWPU用量的增加，纸张的强度，特别是湿拉伸指数和纸张的湿强度都有明显的提高。FT-IR结果表明，CBWPU分子结构中存在叔胺基、咪唑环和氨基脲基结构。对处理后的纸进行扫描电镜观察，发现大量丝状物质和薄膜的存在，改善了纤维间的交联。
Cationic blocked waterborne polyurethane (CBWPU) as paper strength agent was prepared by the reaction of N-[(1,1-dimethyl-2-acetyl)ethyl]-β-dihydroxyethylamino propanamide(DDP), isophorone diisocyanate(IPDI), polycaprolactone glycol(PCL) and bisphenol A, with imidazole as blocking agent and N-methyldiethanolamine as hydrophilic chain-extending agent. Effects of the blocked ratio and the dosage of CBWPU on the physical properties of the treated paper were studied. The chemical structure of CBWPU and the surface morphology of the paper surface are characterized by Fourier transform infared spectrometer(FT-IR) spectra and scanning electron microscopy(SEM). The results show that the paper strength, especially the wet tensile index and the wet strength of paper can be obviously improved with the increasing of the blocked ratio and the dosage of CBWPU. FT-IR result shows that structures of tertiary amine group, imidazole ring and urethane group are found in CBWPU molecular structure. SEM obsevation of the treated paper reveals that the exiestence of a lot of filamentous materials and films, which can improve the crosslinking between fibers.
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影响因子：
5.8
作者：
Lai Xiao-juan
通讯作者：
Lai Xiao-juan
DOI：
--
发表时间：
2006
期刊：
--
影响因子：
--
作者：
L. Pei-yi
通讯作者：
L. Pei-yi
影响因子：
9.5
作者：
Queiroz, Denise P.;do Rego, A. M. Botelho;de Pinho, Maria Norberta
通讯作者：
de Pinho, Maria Norberta
影响因子：
2.8
作者：
Meng Zhang;Yuanjuan Wu;Haiyan Wu;Qingsi Zhang
通讯作者：
Meng Zhang;Yuanjuan Wu;Haiyan Wu;Qingsi Zhang
影响因子：
4.6
作者：
Luc Ubaghs;H. Keul;H. Höcker
通讯作者：
Luc Ubaghs;H. Keul;H. Höcker