Ultrasound-assisted synthesis of benzoxazine monomers: Thermal and mechanical properties of polybenzoxazines

Muthukumaraswamy Rangaraj Vengatesan; Subramani Devaraju; Dinakaran Kannaiyan; Jang Kun Song; Muthukaruppan Alagar

doi:10.1002/pi.4337

Ultrasound-assisted synthesis of benzoxazine monomers: Thermal and mechanical properties of polybenzoxazines

Muthukumaraswamy Rangaraj Vengatesan, Subramani Devaraju, Dinakaran Kannaiyan, Jang Kun Song, Muthukaruppan Alagar

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27 Scopus citations

Abstract

A series of benzoxazine monomers (P-aea2-P-aea8) were prepared from appropriate aromatic diamines containing linear aliphatic ether chains with phenol and formaldehyde through the Mannich reaction under ultrasonication and conventional methods. Based on the reaction performance, the ultrasonication method has been found to be more facile and convenient for the synthesis of benzoxazine monomer than the conventional method. The synthesized monomers undergo curing at a lower temperature than that of conventional benzoxazine (Ba-A) monomer as evidenced from differential scanning calorimetric analysis. The presence of an aliphatic ether core in the benzoxazine monomer aids in lowering the curing temperature, which seems to vary linearly with chain length. Thermally polymerized benzoxazine (poly(P-aea_s)) shows an enhanced tensile and flexural strength.

Original language	British English
Pages (from-to)	127-133
Number of pages	7
Journal	Polymer International
Volume	62
Issue number	1
DOIs	https://doi.org/10.1002/pi.4337
State	Published - Jan 2013

Keywords

Curing behavior
Flexural strength
Polybenzoxazine
Tensile strength
Thermal stability
Ultrasound

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10.1002/pi.4337

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title = "Ultrasound-assisted synthesis of benzoxazine monomers: Thermal and mechanical properties of polybenzoxazines",

abstract = "A series of benzoxazine monomers (P-aea2-P-aea8) were prepared from appropriate aromatic diamines containing linear aliphatic ether chains with phenol and formaldehyde through the Mannich reaction under ultrasonication and conventional methods. Based on the reaction performance, the ultrasonication method has been found to be more facile and convenient for the synthesis of benzoxazine monomer than the conventional method. The synthesized monomers undergo curing at a lower temperature than that of conventional benzoxazine (Ba-A) monomer as evidenced from differential scanning calorimetric analysis. The presence of an aliphatic ether core in the benzoxazine monomer aids in lowering the curing temperature, which seems to vary linearly with chain length. Thermally polymerized benzoxazine (poly(P-aeas)) shows an enhanced tensile and flexural strength.",

keywords = "Curing behavior, Flexural strength, Polybenzoxazine, Tensile strength, Thermal stability, Ultrasound",

author = "Vengatesan, {Muthukumaraswamy Rangaraj} and Subramani Devaraju and Dinakaran Kannaiyan and Song, {Jang Kun} and Muthukaruppan Alagar",

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T1 - Ultrasound-assisted synthesis of benzoxazine monomers

T2 - Thermal and mechanical properties of polybenzoxazines

AU - Vengatesan, Muthukumaraswamy Rangaraj

AU - Devaraju, Subramani

AU - Kannaiyan, Dinakaran

AU - Song, Jang Kun

AU - Alagar, Muthukaruppan

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N2 - A series of benzoxazine monomers (P-aea2-P-aea8) were prepared from appropriate aromatic diamines containing linear aliphatic ether chains with phenol and formaldehyde through the Mannich reaction under ultrasonication and conventional methods. Based on the reaction performance, the ultrasonication method has been found to be more facile and convenient for the synthesis of benzoxazine monomer than the conventional method. The synthesized monomers undergo curing at a lower temperature than that of conventional benzoxazine (Ba-A) monomer as evidenced from differential scanning calorimetric analysis. The presence of an aliphatic ether core in the benzoxazine monomer aids in lowering the curing temperature, which seems to vary linearly with chain length. Thermally polymerized benzoxazine (poly(P-aeas)) shows an enhanced tensile and flexural strength.

AB - A series of benzoxazine monomers (P-aea2-P-aea8) were prepared from appropriate aromatic diamines containing linear aliphatic ether chains with phenol and formaldehyde through the Mannich reaction under ultrasonication and conventional methods. Based on the reaction performance, the ultrasonication method has been found to be more facile and convenient for the synthesis of benzoxazine monomer than the conventional method. The synthesized monomers undergo curing at a lower temperature than that of conventional benzoxazine (Ba-A) monomer as evidenced from differential scanning calorimetric analysis. The presence of an aliphatic ether core in the benzoxazine monomer aids in lowering the curing temperature, which seems to vary linearly with chain length. Thermally polymerized benzoxazine (poly(P-aeas)) shows an enhanced tensile and flexural strength.

KW - Curing behavior

KW - Flexural strength

KW - Polybenzoxazine

KW - Tensile strength

KW - Thermal stability

KW - Ultrasound

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JO - Polymer International

JF - Polymer International

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Ultrasound-assisted synthesis of benzoxazine monomers: Thermal and mechanical properties of polybenzoxazines

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Keywords

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