Novel adhesive system based on 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU) and hyperbranched polyglycerols

Mamiński, M.; Witek, Sylwia; Szymona, Karolina; Parzuchowski, Paweł G.

doi:10.1007/s00107-013-0680-9

Cited by 11 publications

(8 citation statements)

References 34 publications

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“…The use of different acids or metal salts like MgCl 2 , ammonium sulphate, NH 4 Cl, p‐toluenesulfonic acid, magnesium nitrate, etc. is reported to be used as catalyst . The use of above catalysts in the composite preparation may reduce the tensile strength of the composites caused by the degradation of hemicellulose, lignin of wood.…”

Section: Introductionmentioning

confidence: 99%

Studies on the physicochemical properties of modified starch‐based wood nanocomposites

Baishya

2016

Starch Stärke

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Bio-based nanocomposites were prepared from starch and soft wood with water as the solvent via a green route with great engineering aspects. Methyl methacrylate (MMA) modified starch, dimethyloldihydroxyethyleneurea (DMDHEU), wood flour, glycerol, and montmorillonite clay (MMT) were employed to prepare the wood starch nanocomposites (WSNC). Three different percentages of MMT were employed to prepare the starch composites and the properties of MMT modified starch composites were studied through limiting oxygen index test (LOI), mechanical and thermogravimetric analysis (TGA). The delamination of silicate layers and morphology of clay incorporated nanocomposites were explained by X-ray diffractometry (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). WSNC with 3 phr (parts per hundred) MMT showed better properties compared to composites containing 1 and 5 phr MMT. The nanocomposites with 3 phr MMT enhanced the flexural strength and tensile strength by 28% and 112%, respectively, compared to MMT free composites. The WSNC having 3 phr MMT also exhibited an outstanding improvement in thermal stability, water resistance, and flame retardancy properties. Abbreviations:DMDHEU, dimethyloldihydroxyethyleneurea; MMA, methyl methacrylate; MMA-g-starch, methyl methacrylate grafted starch; MMT, montmorillonite; Phr, parts per hundred; WPC, wood polymer composite; WSNC, wood starch nanocomposite; W/MMA-g-starch/D, wood composites with methyl methacrylate grafted starch cross-linked with DMDHEU; W/MMA-g-starch/D/X phr MMT, wood composites containing X phr MMT with methyl methacrylate grafted starch cross-linked with DMDHEU, where X is 1, 3, and 5

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Section: Introductionmentioning

confidence: 99%

Studies on the physicochemical properties of modified starch‐based wood nanocomposites

Baishya

2016

Starch Stärke

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“…The absorption peak of C-O-C at 1157 cm −1 increased due to the condensation reaction of DM to form an ether bond. The highest absorption peak occurred at 1050 cm −1 and was caused by the stretching vibration of the alcohol and ether groups in the polysaccharide [11]. The peaks of groups…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

Study on Improving the Fixation Rate of Impregnated Poplar Wood with Maltodextrin and 1,3-Dimethylol-4,5-Dihydroxyethyleneurea

Cai

et al. 2019

Applied Sciences

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The impregnation of poplar wood (Populus adenopoda Maxim) with 1,3-dimethylol-4,5-dihydroxyethyleneurea and maltodextrin and the effects of ZnCl2 and curing at 103 °C and 120 °C on the fixation rate and the leaching resistance of modified samples were investigated (103 °C curing, ZnCl2 + 103 °C curing, 120 °C curing, and ZnCl2 + 120 °C curing are denoted as 103, ZC-103, 120, and ZC-120, respectively), with the aim of improving the modification effect. The results showed that ZC-103 had the highest fixation rate, and its weight leaching ratio was higher than that of 120. Fourier-transform infrared spectroscopy showed that ZnCl2 did not affect the functional groups of the modified chemicals. The flexural strength and modulus and the compressive strength perpendicular to the grain were highest for ZC-103. In summary, ZC-103 exhibited the highest fixation rate, indicating that the hardener ZnCl2 bridged and increased the interfacial properties between the chemicals and cell walls and therefore increased the potential for macromolecule polycondensation between the chemicals and cell wall materials. This research paves the way for improving the fixation rate of impregnated wood and provides new insights into practical applications.

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“…. Selama ini HPG digunakan dalam bidang farmasi sebagai pengantar obat (Boudou et al 2013), sebagai perekat kayu (Mamiński et al 2013), sebagai salut katalis (Lang et al 2003) (Rahmi, Yunilawati, and Riyanto 2016). Pada penelitian ini HPG dikembangkan menjadi polimer alkid.…”

Section: Alkidunclassified

Sintesis Dan Karakterisasi Polimer Alkid Poligliserol Banyak Cabang

et al. 2019

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Novel adhesive system based on 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU) and hyperbranched polyglycerols

Cited by 11 publications

References 34 publications

Studies on the physicochemical properties of modified starch‐based wood nanocomposites

Studies on the physicochemical properties of modified starch‐based wood nanocomposites

Study on Improving the Fixation Rate of Impregnated Poplar Wood with Maltodextrin and 1,3-Dimethylol-4,5-Dihydroxyethyleneurea

Sintesis Dan Karakterisasi Polimer Alkid Poligliserol Banyak Cabang

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