Effect of Monophenyl Borate on Properties of High-ortho Phenolic Fibers

Mingli Jiao; Dongxue Ren; Quan Diao; Rong Gong; Kai Yang; Jian Cao

doi:10.1007/s12221-017-6972-7

Effect of Monophenyl Borate on Properties of High-ortho Phenolic Fibers

Mingli Jiao, Dongxue Ren, Quan Diao, Rong Gong, Kai Yang, Jian Cao

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Abstract

A series of monophenyl borate (MPB) modified high-ortho phenolic copolymer fibers (BOPFs) were prepared by melt-spinning of the high-ortho phenol-formaldehyde resins with different content of MPB, and cured in a formaldehyde solution. The solution curing fibers were heated up to 240 °C at elevated temperatures in N2. The effect of MPB on the structure and properties of the BOPFs was investigated by Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance spectroscopy (NMR), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). The results show that a B-O linkage inserts into the high-ortho phenolic copolymer molecular chain with the addition of MPB, and increases the crosslinkage and thermal stability. The peak of O/P (ortho/para) value of fiber (1.94) and elongation (5.6 %) were obtained when BOPFs-4 was heat-cured at 240 °C for 2 h.

Original language	English
Pages (from-to)	875-881
Number of pages	7
Journal	Fibers and Polymers
Volume	18
Issue number	5
Early online date	28 May 2017
DOIs	https://doi.org/10.1007/s12221-017-6972-7
Publication status	Published - May 2017

Keywords

high ortho
phenolic fiber
monophenyl borate
Copolymerization

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title = "Effect of Monophenyl Borate on Properties of High-ortho Phenolic Fibers",

abstract = "A series of monophenyl borate (MPB) modified high-ortho phenolic copolymer fibers (BOPFs) were prepared by melt-spinning of the high-ortho phenol-formaldehyde resins with different content of MPB, and cured in a formaldehyde solution. The solution curing fibers were heated up to 240 °C at elevated temperatures in N2. The effect of MPB on the structure and properties of the BOPFs was investigated by Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance spectroscopy (NMR), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). The results show that a B-O linkage inserts into the high-ortho phenolic copolymer molecular chain with the addition of MPB, and increases the crosslinkage and thermal stability. The peak of O/P (ortho/para) value of fiber (1.94) and elongation (5.6 %) were obtained when BOPFs-4 was heat-cured at 240 °C for 2 h.",

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author = "Mingli Jiao and Dongxue Ren and Quan Diao and Rong Gong and Kai Yang and Jian Cao",

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doi = "10.1007/s12221-017-6972-7",

language = "English",

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T1 - Effect of Monophenyl Borate on Properties of High-ortho Phenolic Fibers

AU - Jiao, Mingli

AU - Ren, Dongxue

AU - Diao, Quan

AU - Gong, Rong

AU - Yang, Kai

AU - Cao, Jian

PY - 2017/5

Y1 - 2017/5

N2 - A series of monophenyl borate (MPB) modified high-ortho phenolic copolymer fibers (BOPFs) were prepared by melt-spinning of the high-ortho phenol-formaldehyde resins with different content of MPB, and cured in a formaldehyde solution. The solution curing fibers were heated up to 240 °C at elevated temperatures in N2. The effect of MPB on the structure and properties of the BOPFs was investigated by Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance spectroscopy (NMR), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). The results show that a B-O linkage inserts into the high-ortho phenolic copolymer molecular chain with the addition of MPB, and increases the crosslinkage and thermal stability. The peak of O/P (ortho/para) value of fiber (1.94) and elongation (5.6 %) were obtained when BOPFs-4 was heat-cured at 240 °C for 2 h.

AB - A series of monophenyl borate (MPB) modified high-ortho phenolic copolymer fibers (BOPFs) were prepared by melt-spinning of the high-ortho phenol-formaldehyde resins with different content of MPB, and cured in a formaldehyde solution. The solution curing fibers were heated up to 240 °C at elevated temperatures in N2. The effect of MPB on the structure and properties of the BOPFs was investigated by Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance spectroscopy (NMR), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). The results show that a B-O linkage inserts into the high-ortho phenolic copolymer molecular chain with the addition of MPB, and increases the crosslinkage and thermal stability. The peak of O/P (ortho/para) value of fiber (1.94) and elongation (5.6 %) were obtained when BOPFs-4 was heat-cured at 240 °C for 2 h.

KW - high ortho

KW - phenolic fiber

KW - monophenyl borate

KW - Copolymerization

U2 - 10.1007/s12221-017-6972-7

DO - 10.1007/s12221-017-6972-7

M3 - Article

SN - 1229-9197

VL - 18

SP - 875

EP - 881

JO - Fibers and Polymers

JF - Fibers and Polymers

IS - 5

ER -

Effect of Monophenyl Borate on Properties of High-ortho Phenolic Fibers

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Keywords

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