Characterization, thermal and mechanical properties and hydrophobicity of resorcinol-furfural/silicone hybrid aerogels synthesized by ambient-pressure drying

In this work, a resorcinol-furfural/silicone hybrid aerogels is synthesized by ambient pressure drying with good thermal, mechanical properties and hydrophobicity.

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Cellulose nanofibril reinforced silica aerogels: optimization of the preparation process evaluated by a response surface methodology

RSC Advances ◽

10.1039/c6ra20986f ◽

2016 ◽

Vol 6 (102) ◽

pp. 100326-100333 ◽

Cited By ~ 19

Author(s):

Jingjing Fu ◽

Chunxia He ◽

Jingda Huang ◽

Zhilin Chen ◽

Siqun Wang

Keyword(s):

Mechanical Properties ◽

Response Surface Methodology ◽

Response Surface ◽

Ambient Pressure ◽

Silica Aerogels ◽

Ambient Pressure Drying ◽

Preparation Process ◽

Cellulose Nanofibril ◽

Drying Method ◽

Composite Aerogels

CNF–silica composite aerogels with reinforced mechanical properties were prepared under an ambient pressure drying method and optimized by a response surface methodology.

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Preparation of the methyltriethoxysilane based aerogel monolith with an ultra-low density and excellent mechanical properties by ambient pressure drying

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2021.05.059 ◽

2021 ◽

Author(s):

Xiaoyong He ◽

Bicheng Tang ◽

Xuan Cheng ◽

Ying Zhang ◽

Liuying Huang

Keyword(s):

Mechanical Properties ◽

Ambient Pressure ◽

Ambient Pressure Drying ◽

Low Density

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Elastic Aerogels and Xerogels Synthesized from Methyltrimethoxysilane (MTMS)

MRS Proceedings ◽

10.1557/proc-1134-bb07-06 ◽

2008 ◽

Vol 1134 ◽

Cited By ~ 1

Author(s):

Kazuyoshi Kanamori ◽

Kazuki Nakanishi ◽

Teiichi Hanada

Keyword(s):

Silicon Atom ◽

Ambient Pressure ◽

Silanol Group ◽

Supercritical Drying ◽

Lower Surface ◽

Ambient Pressure Drying ◽

Silica Gels ◽

Elastic Behavior ◽

Group Density ◽

Hybrid Aerogels

AbstractTransparent organic-inorganic hybrid aerogels and aerogel-like xerogels have been prepared from methyltrimethoxysilane (MTMS) respectively by supercritical drying (SCD) and ambient pressure drying (APD). The new aerogels and xerogels significantly deform without collapsing on uniaxial compression and almost fully relax when unloaded. This elastic behavior, termed as “gspring-back”, allows APD without noticeable shrinkage and cracking. The flexible network composed of lower cross-linking density (up to three bonds per every silicon atom) compared to silica gels (up to four bonds) and repulsion between hydrophobic methyl groups bonded to every silicon atom largely contributes to the pronounced deformability and relaxing, respectively. Lower surface silanol group density also plays a crucial role for the “gspring-back” behavior.

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Effect of 1,2,4,5-Benzenetetracarboxylic Acid on Unsaturated Poly(butylene adipate-co-butylene itaconate) Copolyesters: Synthesis, Non-Isothermal Crystallization Kinetics, Thermal and Mechanical Properties

Polymers ◽

10.3390/polym12051160 ◽

2020 ◽

Vol 12 (5) ◽

pp. 1160 ◽

Cited By ~ 3

Author(s):

Chin-Wen Chen ◽

Te-Sheng Hsu ◽

Kuan-Wei Huang ◽

Syang-Peng Rwei

Keyword(s):

Mechanical Properties ◽

Crystallization Kinetics ◽

Isothermal Crystallization ◽

Crystallization Behavior ◽

Crystallization Rate ◽

Cross Linking ◽

Thermal And Mechanical Properties ◽

Isothermal Crystallization Kinetics ◽

Melt Polymerization ◽

Thermal Mechanical Properties

Unsaturated poly (butylene adipate-co-butylene itaconate) (PBABI) copolyesters were synthesized through melt polymerization composed of 1,4-butanediol (BDO), adipic acid (AA), itaconic acid (IA) and 1,2,4,5-benzenetetracarboxylic acid (BTCA) as a cross-linking modifier. The melting point, crystallization and glass transition temperature of the PBABI copolyesters were detected around 29.8–49 °C, 7.2–29 °C and −51.1 and −58.1 °C, respectively. Young’s modulus can be modified via partial cross-linking by BTCA in the presence of IA, ranging between 32.19–168.45 MPa. Non-isothermal crystallization kinetics were carried out to explore the crystallization behavior, revealing the highest crystallization rate was placed in the BA/BI = 90/10 at a given molecular weight. Furthermore, the thermal, mechanical properties, and crystallization rate of PBABI copolyesters can be tuned through the adjustment of BTCA and IA concentrations.

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