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首页> 外文会议>International Conference on Industrial, Mechanical, Electrical, and Chemical Engineering >Synthesis of Tannin Phenol Formaldehyde (Tpf) Copolymer from Ethyl Acetate Extract of Green Tea Leaf (Camellia Sinensis) as Bioadhesive Wood
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Synthesis of Tannin Phenol Formaldehyde (Tpf) Copolymer from Ethyl Acetate Extract of Green Tea Leaf (Camellia Sinensis) as Bioadhesive Wood

机译：单宁酚甲醛（TPF）共聚物的合成绿茶叶（Camellia Sinensis）作为生物粘附木材的乙酸乙酯提取物

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This study aims to synthesize tannin phenol formaldehyde (TPF) copolymer from green tea ethyl acetate extract (Camellia Sinensis) as a wood adhesive. In this study, maceration with methanol solvent was then partitioned with n-hexane and ethyl acetate solvents. The highest ethyl acetate extract has the highest levels of polyphenols and stems numbers, namely 33,87% and 395,592 so that it has the potential to be a source of tannins in the synthesis of TPF. Ethyl acetate extract was then characterized by FTIR Spectrophotometer, Differential Scanning Calorimeter (DSC) and X-Ray Diffraction (XRD). The synthesis of the TPF copolymer was carried out using a solution with an alkaline catalyst of NaOH which was heated for 5 hours at 85°C with a mole ratio of phenol: formaldehyde, i.e. 1: 2 and tannin by 10%, 20% and 40% of the phenol mass. The resulting copolymers were tested for physical appearance, solids, viscosity, pH, and formaldehyde emissions. TPF copolymers were then applied as wood adhesives, and shear tests were performed to determine the adhesive quality. Characterization results showed that TPF copolymer with tannin composition 40% (w / w) of phenol mass had the lowest formaldehyde emission of 0.059 mg / L and resistance of 4761 N.
机译：本研究旨在将单旦酚甲醛（TPF）共聚物合成，从绿茶乙酸乙酯（CAMELLIA SINENSIS）中作为木材粘合剂。然后，用正己烷和乙酸乙酯溶剂划分含有甲醇溶剂的普遍。最高乙酸乙酯提取物具有最高水平的多酚和茎数，即33,87％和395,592，使得它具有在TPF的合成中成为单宁的源。然后通过FTIR分光光度计，差示扫描量热计（DSC）和X射线衍射（XRD）表征乙酸乙酯提取物。使用具有NaOH的碱性催化剂的溶液在85℃下以苯酚的摩尔比加热5小时进行TPF共聚物的合成，苯酚：甲醛，即1：2和单宁达10％，20％和40％的苯酚质量。测试所得共聚物的物理外观，固体，粘度，pH和甲醛排放。然后将TPF共聚物施加为木材粘合剂，并进行剪切测试以确定粘合品质。表征结果表明，具有单宁组合物的TPF共聚物40％（w / w）的苯酚物质具有0.059mg / L的最低甲醛排放，并且4761n的抗性。

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