Synthesis of novel biobased polyimides derived from isomannide with good optical transparency, solubility and thermal stability

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 67574-67582 ◽  
Author(s):  
Gaili Yang ◽  
Rui Zhang ◽  
Huahua Huang ◽  
Lixin Liu ◽  
Lei Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Optical Transparency ◽  
New Approach ◽  
Sustainable Materials

Novel biobased polyimides with good optical transparency and combined properties were synthesized from biomass isomannide-derived diamines and/or dianhydrides, thus providing a new approach to develop sustainable materials of high performance.

scholarly journals A new approach to both high safety and high performance of lithium-ion batteries

2020 ◽  
Vol 6 (9) ◽  
pp. eaay7633 ◽  
Author(s):  
Shanhai Ge ◽  
Yongjun Leng ◽  
Teng Liu ◽  
Ryan S. Longchamps ◽  
Xiao-Guang Yang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Elevated Temperature ◽  
High Power ◽  
High Performance ◽  
Lithium Ion ◽  
New Approach ◽  
Self Heating ◽  
On Demand ◽  
Li Ion ◽  
Novel Concept

We present a novel concept to achieve high performance and high safety simultaneously by passivating a Li-ion cell and then self-heating before use. By adding a small amount of triallyl phosphate in conventional electrolytes, we show that resistances of the passivated cells can increase by ~5×, thereby ensuring high safety and thermal stability. High power before battery operation is delivered by self-heating to an elevated temperature such as 60°C within tens of seconds. The present approach of building a resistive cell with highly stable materials and then delivering high power on demand through rapid thermal stimulation leads to a revolutionary route to high safety when batteries are not in use and high battery performance upon operation.

scholarly journals High performance polyimides with good solubility and optical transparency formed by the introduction of alkyl and naphthalene groups into diamine monomers

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 40996-41003 ◽  
Author(s):  
Tianyun Li ◽  
Huahua Huang ◽  
Lei Wang ◽  
Yongming Chen
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Optical Transparency ◽  
Excellent Thermal Stability ◽  
Microwave Assisted ◽  
Good Solubility ◽  
Optically Transparent ◽  
Diamine Monomer

Highly soluble and optically transparent polyimides with excellent thermal stability were prepared by the introduction of alkyl and naphthalene groups into a single diamine monomer under microwave-assisted polymerization.

Theoretical Interpretation of High-Performance Chromatographic Data for a Heterogeneous Series of Compounds

1992 ◽  
Vol 57 (1) ◽  
pp. 33-45
Author(s):  
Vladimír Jakuš
Keyword(s):  
Experimental Data ◽  
High Performance ◽  
Theoretical Interpretation ◽  
Retention Data ◽  
Theoretical Evaluation ◽  
New Approach ◽  
Free Energy Of Solvation ◽  
Rp Hplc ◽  
Mobile Phases ◽  
Reversed Phases

A new approach to theoretical evaluation of the Gibbs free energy of solvation was applied for estimation of retention data in high-performance liquid chromatography on reversed phases (RP-HPLC). Simple and improved models of stationary and mobile phases in RP-HPLC were employed. Statistically significant correlations between the calculated and experimental data were obtained for a heterogeneous series of twelve compounds.

Vacuum processed large area doped thin-film crystals: A new approach for high-performance organic electronics

2021 ◽  
Vol 17 ◽  
pp. 100352
Author(s):  
S.-J. Wang ◽  
M. Sawatzki ◽  
H. Kleemann ◽  
I. Lashkov ◽  
D. Wolf ◽  
...  
Keyword(s):  
Thin Film ◽  
Organic Electronics ◽  
High Performance ◽  
Large Area ◽  
New Approach

scholarly journals To separate or not to separate: what is necessary and enough for a green and sustainable extraction of bioactive compounds from Brazilian citrus waste

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Vânia G. Zuin ◽  
Luize Z. Ramin ◽  
Mateus L. Segatto ◽  
Aylon M. Stahl ◽  
Karine Zanotti ◽  
...  
Keyword(s):  
High Performance ◽  
Orange Peel ◽  
Solvent Ratio ◽  
Biomass Waste ◽  
Chemical Profiles ◽  
Orange Waste ◽  
Sustainable Materials ◽  
Citrus Waste ◽  
Sustainable Extraction

AbstractIncreasing demands to obtain chemicals via greener and more sustainable materials and processes introduces concepts that should be considered and applied from lab to larger scales. Obtaining bioactive chemicals from agro-industrial non-food biomass waste can combine benign techniques and bio-circular economy to reach this goal. After extraction, evaluating profitability and environmental impacts to decide whether separation – and to what extent – is necessary or not is indispensable. This could be integrated into an approach known as sufficiency, as an important criterion for sustainability. From this perspective, Brazil’s annual generation of 8 million tons of orange waste is relevant, since citrus waste has large amounts of high-value compounds, such as pectin, d-limonene and flavonoids. This case study aimed at developing and comparing green and sustainable analytical methods to obtain flavonoids from orange peel. Homogenizer, ultrasound and microwave-assisted extractions were employed using chemometric tools, considering time, sample/solvent ratio, temperature and ethanol concentration as variables to obtain extracts containing hesperidin, naringenin, hesperetin and nobiletin. The bioactive flavonoids were determined by high-performance liquid chromatography (HPLC-UV). Microwave extraction was the most efficient method for obtaining the majority of flavonoids studied, six times more for hesperidin. Moreover, orange waste from different farming models showed diverse chemical profiles showing the importance of this alternative in natural product resources.

Thermal Stability of High Performance Thermoelectric β-Zn4Sb3 in Argon

2011 ◽  
Vol 2011 (17) ◽  
pp. 2733-2737 ◽  
Author(s):  
Hao Yin ◽  
Birgitte L. Pedersen ◽  
Bo B. Iversen
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Thermal Stability Of

Preparation and Characterization of Nanocellular Poly(phenylquinoxaline) Foams. A New Approach to Nanoporous High-Performance Polymers

2007 ◽  
Vol 40 (6) ◽  
pp. 2070-2078 ◽  
Author(s):  
Samuel Merlet ◽  
Catherine Marestin ◽  
Fréderic Schiets ◽  
Olivier Romeyer ◽  
Régis Mercier
Keyword(s):  
High Performance ◽  
New Approach ◽  
High Performance Polymers
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