Synthesis and characterization of copolymeric aliphatic-aromatic esters derived from terephthalic acid, 1,4-butanediol, and ε-caprolactone by physical, thermal, and mechanical properties and NMR measurements

2012 ◽  
Vol 127 (6) ◽  
pp. 4385-4394 ◽  
Author(s):  
Ching-Huang Wang ◽  
Ping-Hsun Tsai ◽  
Lou-Sing Kan ◽  
C. Will Chen
Keyword(s):  
Mechanical Properties ◽  
Terephthalic Acid ◽  
Synthesis And Characterization ◽  
Thermal And Mechanical Properties ◽  
Aromatic Esters

Monomer Synthesis and Characterization of Novel Aromatic Polyamides

2012 ◽  
Vol 549 ◽  
pp. 45-49
Author(s):  
Wei Hu ◽  
Guang Xian Zhang ◽  
Feng Xiu Zhang ◽  
Hui Zheng ◽  
Ming Lu
Keyword(s):  
Mechanical Properties ◽  
Terephthalic Acid ◽  
High Performance ◽  
High Strength ◽  
Aromatic Polyamide ◽  
Synthesis And Characterization ◽  
Thermal And Mechanical Properties ◽  
Aromatic Polyamides ◽  
Ft Ir

Aromatic polyamides are high performance materials, having outstanding thermal and mechanical properties. Poly(2,5-Diamino-terephthalic acid) (PATA) was designed as a novel aromatic polyamide with high strength and modulus. In this paper, 2,5-Diamino-terephthalic acid (DATA), as a monomer of PATA, was synthesized from 2,5-Dimetyl-1,4-phenyldiamine (DPA). First step was the amidation of DPA by reacting with acetic anhydride to protect amido group. Then N-(4–Acetylamino-2,5-dimethyl–phenyl)-acetamide (AMPA) was oxidized by potassium permanganate. Finally, AMPA was hydrolyzed by sodium hydroxide and the monomer DATA was precipitated by hydrochloric acid around PH 5. DATA and all the intermediate products were characterized and confirmed by 1HNMR and FT-IR spectra. They were all in great agreement with the proposed structure. The overall yield of DATA was about 40.0%.

Synthesis and Characterization of Biodegradable Starch-Based Bioplastics

2016 ◽  
Vol 846 ◽  
pp. 673-678 ◽  
Author(s):  
Nurul Aina Ismail ◽  
Syuhada Mohd Tahir ◽  
Yahya Norihan ◽  
Muhamad Firdaus Abdul Wahid ◽  
Nur Ezzati Khairuddin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Synthesis And Characterization ◽  
Mechanical And Thermal Properties ◽  
Thermal And Mechanical Properties ◽  
Suitable Alternative ◽  
Soil Burial Test ◽  
Soil Burial ◽  
Starch Potato

This study was carried out to evaluate the potential of plastic synthesized using bio-based starch. The method began with extraction of starch from chosen tubers with high content of starch; potato and yam. The samples were first grated, grinded and strained to obtain crude starch, which then centrifuged and rinsed to get pure starch. The starch was then reacted with hydrochloric acid to breakdown amylopectin to prevent the starch from becoming plastic-like. Finally, propan-1,2,3-triol was added as a plasticizer to increase the elasticity of the product. The chemical, mechanical, and thermal properties of the products were analyzed using Fourier transform infrared (FTIR), tensile strength tester and Thermogravimetric analysis (TGA). The FTIR spectra of the product displayed the presence of O-H, C-H, C=O and C-O absorption peaks, which indicate the formation of bioplastic has already occured. The tensile strength obtained for potato and yam starch-based bioplastic are 0.6 MPa and 1.9 MPa, respectively. The result gained from TGA showed that 50% weight loss occurred at 250°C for potato and 310°C for yam-based plastic. The highly biodegradability of the plastic was proven using soil burial test, which observed the percentage of soil biodegradation for potato and yam-based bioplastic in 1 week duration is 43% and 26%, respectively. These bio-based plastics have exhibited good thermal and mechanical properties with high biodegradability that makes them a suitable alternative for the existing conventional plastics.

Synthesis and characterization of photothermal antibacterial hydrogel with enhanced mechanical properties

2021 ◽  
Author(s):  
Shu bin Li ◽  
Xiao Wang ◽  
Jiang Zhu ◽  
Zhenyu Wang ◽  
Lu Wang
Keyword(s):  
Mechanical Properties ◽  
Hydrogen Bond ◽  
Fe3o4 Nanoparticles ◽  
Intermolecular Hydrogen Bond ◽  
Amide Bond ◽  
Synthesis And Characterization

In this work, using carboxyl-modified Fe3O4 nanoparticles as a photothermal agent, combining the chemical amide bond and intermolecular hydrogen bond crosslinking force, a photothermal hydrogel with enhanced mechanical properties was...

Polyamides containing a biorenewable aromatic monomer based on coumalate esters: from synthesis to evaluation of the thermal and mechanical properties

2021 ◽  
Vol 12 (16) ◽  
pp. 2379-2388
Author(s):  
Jules Stouten ◽  
Aleksandra A. Wróblewska ◽  
Glenn Grit ◽  
Jurrie Noordijk ◽  
Bert Gebben ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Propionic Acid ◽  
Terephthalic Acid ◽  
Thermal And Mechanical Properties ◽  
Aromatic Polyamides ◽  
Aromatic Monomer

A new biobased alternative for terephthalic acid (TPA) in (semi-)aromatic polyamides is proposed, namely 4-carboxybenzene propionic acid (4CBPA).

scholarly journals Computational characterization of thermal and mechanical properties of single and bilayer germanene nanoribbon

2021 ◽  
Vol 190 ◽  
pp. 110272 ◽  
Author(s):  
Md. Habibur Rahman ◽  
Emdadul Haque Chowdhury ◽  
Didarul Ahasan Redwan ◽  
Sungwook Hong
Keyword(s):  
Mechanical Properties ◽  
Thermal And Mechanical Properties

Synthesis and characterization of poly(glycerol sebacate)-based elastomeric copolyesters for tissue engineering applications

2016 ◽  
Vol 7 (14) ◽  
pp. 2553-2564 ◽  
Author(s):  
Yating Jia ◽  
Weizhong Wang ◽  
Xiaojun Zhou ◽  
Wei Nie ◽  
Liang Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Water Uptake ◽  
Synthesis And Characterization ◽  
Uptake Capacity ◽  
Engineering Applications ◽  
Water Uptake Capacity

A poly(glycerol sebacate)-based elastomeric copolyesters with improved mechanical properties and higher water uptake capacity.

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