Polyesters derived from bio-based eugenol and 10-undecenoic acid: synthesis, characterization, and structure–property relationships

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 85996-86005 ◽  
Author(s):  
Keling Hu ◽  
Dongping Zhao ◽  
Guolin Wu ◽  
Jianbiao Ma
Keyword(s):  
Mechanical Properties ◽  
Lignocellulosic Biomass ◽  
Acid Synthesis ◽  
Clove Oil ◽  
Thermal And Mechanical Properties ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Undecenoic Acid

A series of thermoplastic polyesters with versatile thermal and mechanical properties were prepared from renewable eugenol, which is extracted from lignocellulosic biomass-clove oil.

scholarly journals Enhancing thermal and mechanical properties of polypropylene using masterbatches of nanoclay and nano-CaCO3: A review

2018 ◽  
Vol 3 (1) ◽  
pp. 19-26
Author(s):  
Achmad Chafidz
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Nanocomposites ◽  
Review Paper ◽  
Thermal And Mechanical Properties ◽  
Structure Property ◽  
Melt Compounding ◽  
Structure Property Relationships ◽  
Composites Materials ◽  
Macro Scale

Polymer nanocomposites (PNCs) can be considered as promising relatively new types of composite materials. PNCs give opportunity to develop new composites materials with different structure-property relationships compared to their conventional micro/macro scale composites. Polyolefin based nanocomposites nowadays become more important, because this type of composites has been largely used in various industries. For example, polypropylene based nanocomposites have been widely used in automobile – related industries to replace their conventional composites. This review paper will focus on the polypropylene based nanocomposites prepared using masterbatches of nanoclay and nano-CaCO3 via melt compounding method. The thermal and mechanical properties of such nanocomposites were also discussed.

QSPR STUDY OF RHEOLOGICAL AND MECHANICAL PROPERTIES OF CHLOROPRENE RUBBER ACCELERATORS

2014 ◽  
Vol 87 (2) ◽  
pp. 219-238 ◽  
Author(s):  
Roberto Todeschini ◽  
Viviana Consonni ◽  
Davide Ballabio ◽  
Andrea Mauri ◽  
Matteo Cassotti ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mathematical Models ◽  
Structural Features ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Quantitative Structure Property Relationships ◽  
Cure Time ◽  
Chloroprene Rubber ◽  
Experimental Values ◽  
Rubber Accelerators

ABSTRACT In this preliminary study, mathematical models based on Quantitative Structure Property Relationships (QSPR) were applied in order to analyze how molecular structure of chloroprene rubber accelerators relates to their rheological and mechanical properties. QSPR models were developed in order to disclose which structural features mainly affect the mechanism of vulcanization. In such a way QSPR can help in a faster and more parsimonious design of new chloroprene rubber curative molecules. Regression mathematical models were calibrated on two rheological properties (scorch time and optimum cure time) and three mechanical properties (modulus 100%, hardness, and elongation at break). Models were calculated using experimental values of 14 accelerators belonging to diverse chemical classes and validated by means of different strategies. All the derived models gave a good degree of fitting (R2 values ranging from 84.5 to 98.7) and a satisfactory predictive power. Moreover, some hypotheses on the correlations between specific structural features and the analyzed rheological and mechanical properties were drawn. Owing to the relatively small set of accelerators used to calibrate the models, these hypotheses should be further investigated and proved.

Crosslinking and Mechanical Properties of Liquid Rubber. I. Curative Effect of Aliphatic DIOLS

1979 ◽  
Vol 52 (5) ◽  
pp. 920-948 ◽  
Author(s):  
Yuji Minoura ◽  
Shinzo Yamashita ◽  
Hiroshi Okamoto ◽  
Tadao Matsuo ◽  
Michiaki Izawa ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Low Molecular Weight ◽  
Structure Property ◽  
X Ray Diffraction ◽  
Curative Effect ◽  
Polyurethane Elastomers ◽  
X Ray ◽  
Structure Property Relationships ◽  
The Difference

Abstract The structure-property relationships of polyurethane elastomers derived from a liquid hydroxyl-terminated polybutadiene/low molecular weight aliphatic diol/diisocyanate system were studied. The effects of the amount of low molecular weight diol on the mechanical properties of the elastomer were discussed on the basis of the results of stress-strain, swelling, dynamic viscoelasticity, x-ray diffraction, etc. It was found that some particular combinations of low molecular weight diol and diisocyanate specifically affect the properties of elastomers. When the mechanical properties of the elastomers were plotted against the number of methylene carbons in the low molecular weight diol, characteristic zigzag patterns were obtained. These patterns were explained by the difference in the packing and the dependence of the strength of intermolecular hydrogen bonding on whether the number of the methylene carbons was even or odd. This assumption was confirmed by x-ray diffraction.

Structure/Property Relationships and Applications of Rapidly Solidified Aluminum Alloys

1981 ◽  
Vol 8 ◽  
Author(s):  
C. M. Adam
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Aluminum Alloys ◽  
Thermomechanical Processing ◽  
Structure Property ◽  
Turbine Engine ◽  
Structure Property Relationships ◽  
Plant Stage ◽  
Spherical Droplets ◽  
Rapidly Solidified

ABSTRACTDuring the last five years Pratt & Whitney Aircraft has developed rapid solidification powder metallurgy and consolidation techniques to produce advanced aluminum alloys. A centrifugal rotary atomization device with forced high velocity helium convective cooling has been developed to pilot-plant stage, to produce aluminum alloys of novel compositions for advanced gas turbine engine applications. Rapidly solidified aluminum alloys solidify as spherical droplets up to 100 μm diameter with cooling rates of 105 — 106 K/sec, and demonstrate new microstructural features which have been exploited to develop elevated temperature mechanical properties. Alloys have been developed for 400 — 500°F fan and compressor applications that have traditionally used titanium alloys, and this paper reviews the microstructural evolution of rapidly solidified structures during thermomechanical processing.

scholarly journals Hydrogen bonding and thermoplastic elastomers – a nice couple with temperature-adjustable mechanical properties

Soft Matter ◽  
2018 ◽  
Vol 14 (14) ◽  
pp. 2701-2711 ◽  
Author(s):  
Elisabeth Wittenberg ◽  
Andreas Meyer ◽  
Steffen Eggers ◽  
Volker Abetz
Keyword(s):  
Mechanical Properties ◽  
Hydrogen Bonding ◽  
Thermoplastic Elastomers ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Styrene Butadiene ◽  
Hydrogen Bonded

Hydrogen bonded supramolecular styrene–butadiene copolymers are investigated regarding their structure–property relationships using DSC, DMA, FTIR and SAXS.

Sign in / Sign up

Export Citation Format

Share Document