Synthesis and application of polyurethane basic organic-inorganic hybrid materials as highly hydrophobic coatings

Yang, Chih‐Wen; Pan, Yun-Wen; Guo, Jian-Jhang; Young, Tai‐Horng; Chiu, Wen‐Yen; Hsieh, K. H.

doi:10.1007/s10965-016-0919-3

Cited by 2 publications

(1 citation statement)

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“…Compared to MPP-modified PET fiber, the surface of TMPP-modified PET fiber is occupied with an integrated compact membrane with embedded and semi-embedded particles (Figure 8c,d), so that the surface roughness and the area of the covered region increased. These results are attributed to the formation of an integrated compact membrane during solvent volatilization and TEOS hydrolysis because of the capillary force when PET fiber soaked with TMPP was exposed to air [23]. The membrane was shaped into a strong cover by SiO 2 from TEOS and molecular chains of MPP.…”

Section: Resultsmentioning

confidence: 99%

Surface Modification of PET Fiber with Hybrid Coating and Its Effect on the Properties of PP Composites

Mao

2019

Polymers

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Surface modification fundamentally influences the morphology of polyethylene terephthalate (PET) fibers produced from abandoned polyester textiles and improve the compatibility between the fiber and the matrix. In this study, PET fiber was modified through solution dip-coating using a novel synthesized tetraethyl orthosilicate (TEOS)/KH550/ polypropylene (PP)-g-MAH (MPP) hybrid (TMPP). The PET fiber with TMPP modifier was exposed to the air. SiO2 particles would be hydrolyzed from TEOS and become the crystalline cores of MPP. Then, the membrane formed by MPP, SiO2 and KH550 covered the surface of the PET fiber. TMPP powder was investigated and characterized by fourier transform infrared spectroscopy, scanning electron microscope (SEM) and thermogravimetric analysis (TGA). TMPP-modified PET fiber was researched by X-ray diffraction and SEM. Furthermore, tensile strength of single fiber was also tested. PET fiber/PP composites were studied through dynamic mechanical analysis and SEM. Flexural properties of composites were also measured. The interfacial properties of PET fiber and PP matrix were indirectly represented by contact angle analysis. Results showed that the addition of TEOS is helpful in homogenizing the distribution of PP-g-MAH. Furthermore, TMPP generates an organic-inorganic ‘armor’ structure on PET fiber, which can make up for the damage areas on the surface of PET fiber and strengthen each single-fiber by 14.4%. Besides, bending strength and modulus of TMPP-modified PET fiber-reinforced PP composite respectively, increase by 10 and 800 MPa. The compatibility between PET fiber and PP was also confirmed to be increased by TMPP. Predictably, this work supplied a new way for PET fiber modification and exploited its potential applications in composites.

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Section: Resultsmentioning

confidence: 99%

Surface Modification of PET Fiber with Hybrid Coating and Its Effect on the Properties of PP Composites

Mao

2019

Polymers

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Surface modification of recycled coir fibers with hybrid coating and its effect on the properties of ABS composites

Jiafeng

2022

Mater. Res. Express

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In this work, a hybrid coating (TSMA) was produced using tetraethyl orthosilicate (TEOS)/KH550/Styrene maleic anhydride copolymer (SMA) as raw materials. The coating was afterwards applied to modify recycled coir (r-coir) fibers via dip-coating. R-coir fibers reinforced ABS composites were then prepared and the reinforcing effect of fibers on the composite structure was investigated, as well. The r-coir fibers coated with TSMA were hydrolyzed in air for 3 days. The SiO2 particles produced by sol-gel reaction of TEOS were used to connect KH550 and SMA to the surface of the fibers and form an organic-inorganic ‘armor’ structure. The successful surface modification of the r-coir fibers was proved via FTIR spectroscopic study and the improvement of their decomposition temperature was evidenced by TGA. Furthermore, the homogeneous dispersion of TSMA on the surface of r-coir fibers was observed via SEM. In addition, the tensile strength of single fibers was found to increase by 36.1%. According to the results, TSMA can be successfully homogenized on the fiber surface, enabling one to repair the damaged areas and improve the tensile strength of single fibers. Besides, good compatibility between r-coir fibers and ABS was revealed by contact angle measurements. Furthermore, the bending strength and elastic modulus of TSMA-modified r-coir fibers/ABS composites were improved by 6% and 27%, respectively. Therefore, the method of plant fiber modification proposed in present work provides a reliable way for effective reuse of r-coir fibers.

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Synthesis and application of polyurethane basic organic-inorganic hybrid materials as highly hydrophobic coatings

Cited by 2 publications

References 50 publications

Surface Modification of PET Fiber with Hybrid Coating and Its Effect on the Properties of PP Composites

Surface Modification of PET Fiber with Hybrid Coating and Its Effect on the Properties of PP Composites

Surface modification of recycled coir fibers with hybrid coating and its effect on the properties of ABS composites

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