Synthesis of three novel amino acids-based flame retardants with multiple reactive groups for cotton fabrics

Cellulose ◽  
2019 ◽  
Vol 26 (12) ◽  
pp. 7537-7552 ◽  
Author(s):  
Fang Xu ◽  
Ling Zhong ◽  
Yuan Xu ◽  
Cheng Zhang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Amino Acids ◽  
Flame Retardants ◽  
Cotton Fabrics ◽  
Reactive Groups

scholarly journals Durable and High-efficiency Casein-derived Phosphorus-nitrogen-rich Flame Retardants for Cotton Fabrics

2021 ◽  
Author(s):  
Fang Xu ◽  
Guangxian Zhang ◽  
Peng Wang ◽  
Fangyin Dai
Keyword(s):  
Flame Retardant ◽  
Flame Retardants ◽  
High Efficiency ◽  
Oxygen Index ◽  
Skin Irritation ◽  
Cotton Fabrics ◽  
Reactive Groups ◽  
Index Value ◽  
Positive Effect ◽  
Limited Oxygen

Abstract A casein derivative (CADP) was synthesized using casein, which is bifunctional containing both –P=O(O-NH4+)2 reactive groups and -P(=O)-O-C- groups, and the durable flame-retardant cotton fabrics were successfully prepared by CADP. The –P=O(O-NH4+)2 reactive groups allowed CADP to be firmly grafted onto cellulose. The –P(=O)-O-C- groups made flame-retardant cotton fabrics more resistant to soaping and improved its durability. The modification by 40% CADP increased the limited oxygen index value (LOI) of cotton fabric from 17.4% to 41.6%, which maintained at 26.4% after 50 cycles of home machine washes. The results of TG, TG-FTIR and SEM indicated that CADP increased the condensed components and decreased the flammable gaseous compounds, resulting the positive effect on char formation of cellulose. The whiteness and tensile strength of cotton fabrics were retained well after modification, and the treated cotton fabrics didn’t have skin irritation.

Novel High-Efficiency Casein-Based P–N-Containing Flame Retardants with Multiple Reactive Groups for Cotton Fabrics

2019 ◽  
Vol 7 (16) ◽  
pp. 13999-14008 ◽  
Author(s):  
Fang Xu ◽  
Ling Zhong ◽  
Cheng Zhang ◽  
Peng Wang ◽  
Fengxiu Zhang ◽  
...  
Keyword(s):  
Flame Retardants ◽  
High Efficiency ◽  
Cotton Fabrics ◽  
Reactive Groups

Wool: Its Effect On Flame Retardant Properties of Blend Fabrics

1983 ◽  
Vol 1 (2) ◽  
pp. 145-154 ◽  
Author(s):  
John V. Beninate ◽  
Brenda J. Trask ◽  
Timothy A. Calamari ◽  
George L. Drake
Keyword(s):  
Thermal Degradation ◽  
Flame Retardant ◽  
Flame Retardants ◽  
Oxygen Index ◽  
Cotton Fabrics ◽  
Cotton Wool ◽  
Burning Rates ◽  
Low Levels ◽  
Flame Retardant Properties ◽  
Strength Retention

Durable phosphorus-based flame retardants were applied to twill fabrics con taining cotton and wool to study the effect of wool on the flame retardancy and physical properties of the blend fabrics. The presence of wool in untreated blend fabrics caused burning rates to decrease and oxygen index values to increase as wool content increased in the blends. These effects were also observed in cotton/ wool blends treated with low levels of the Thps-urea-TMM flame retardant, but were less pronounced in fabrics treated at high levels. Thermogravimetric analyses were conducted to study the thermal degradation of the treated and untreated fabrics. The presence of wool in treated blend fabrics did not sig nificantly change strength retention, area shrinkage and wrinkle recovery values in comparison to similarly treated 100% cotton fabrics.

Linear polyamidoamines as novel biocompatible phosphorus-free surface-confined intumescent flame retardants for cotton fabrics

2018 ◽  
Vol 151 ◽  
pp. 52-64 ◽  
Author(s):  
Amedea Manfredi ◽  
Federico Carosio ◽  
Paolo Ferruti ◽  
Elisabetta Ranucci ◽  
Jenny Alongi
Keyword(s):  
Free Surface ◽  
Flame Retardants ◽  
Cotton Fabrics ◽  
Intumescent Flame Retardants

scholarly journals Programmable polyproteams built using twin peptide superglues

2016 ◽  
Vol 113 (5) ◽  
pp. 1202-1207 ◽  
Author(s):  
Gianluca Veggiani ◽  
Tomohiko Nakamura ◽  
Michael D. Brenner ◽  
Raphaël V. Gayet ◽  
Jun Yan ◽  
...  
Keyword(s):  
Amino Acids ◽  
Cell Death ◽  
Biological Function ◽  
Solid Phase ◽  
Building Blocks ◽  
Isopeptide Bond ◽  
Cancer Cell Death ◽  
Protein Partner ◽  
Reactive Groups ◽  
Signal Activation

Programmed connection of amino acids or nucleotides into chains introduced a revolution in control of biological function. Reacting proteins together is more complex because of the number of reactive groups and delicate stability. Here we achieved sequence-programmed irreversible connection of protein units, forming polyprotein teams by sequential amidation and transamidation. SpyTag peptide is engineered to spontaneously form an isopeptide bond with SpyCatcher protein. By engineering the adhesin RrgA from Streptococcus pneumoniae, we developed the peptide SnoopTag, which formed a spontaneous isopeptide bond to its protein partner SnoopCatcher with >99% yield and no cross-reaction to SpyTag/SpyCatcher. Solid-phase attachment followed by sequential SpyTag or SnoopTag reaction between building-blocks enabled iterative extension. Linear, branched, and combinatorial polyproteins were synthesized, identifying optimal combinations of ligands against death receptors and growth factor receptors for cancer cell death signal activation. This simple and modular route to programmable “polyproteams” should enable exploration of a new area of biological space.

Synthesis and Application of Isothiazolinone as Durable Antibacterial

2011 ◽  
Vol 331 ◽  
pp. 265-269
Author(s):  
De Jia Kong ◽  
Zhen Dong Liu ◽  
Yan Li Li
Keyword(s):  
Escherichia Coli ◽  
1H Nmr ◽  
Cotton Fabrics ◽  
Esi Ms ◽  
Antibacterial Performance ◽  
Orthogonal Experiments ◽  
Washing Durability ◽  
Finishing Process ◽  
Staphyloccocus Aureus ◽  
Reactive Groups

A new antibacterial with two reactive groups was synthesized from isothiazolin-3-one and characterized by 1H-NMR and ESI-MS. Through the orthogonal experiments the optimal finishing process was got, that was bath ratio 1:20, Na2SO4 20 g/L, NaHCO315 g/L, T1:60°C, T2:70°C, t1:10 min, t2:20 min, t3:30 min (as shown in fig.1). The antibacterial evaluations of treated cotton fabrics showed that the antibacterial rates for Escherichia coli and Staphyloccocus aureus were 95.64% and 97.83% respectively, and 88.13% and 90.05% respectively after 30 washing cycles. The results indicated that the treated fabric had excellent antibacterial performance and washing durability.

Caseins and hydrophobins as novel green flame retardants for cotton fabrics

2014 ◽  
Vol 99 ◽  
pp. 111-117 ◽  
Author(s):  
Jenny Alongi ◽  
Riccardo Andrea Carletto ◽  
Francesca Bosco ◽  
Federico Carosio ◽  
Alessandro Di Blasio ◽  
...  
Keyword(s):  
Flame Retardants ◽  
Cotton Fabrics

scholarly journals Atrial specific granules of the rat heart: light microscopic staining and histochemical reactions.

1978 ◽  
Vol 26 (12) ◽  
pp. 1094-1102 ◽  
Author(s):  
A J de Bold ◽  
J J Raymond ◽  
S A Bencosme
Keyword(s):  
Amino Acids ◽  
Rat Heart ◽  
Aldehyde Fuchsin ◽  
Specific Granules ◽  
Atrial Specific Granules ◽  
Reactive Groups ◽  
Sensitivity And Selectivity ◽  
Staining Methods ◽  
A Site ◽  
Sulfur Containing

An investigation was carried out to determine general staining and histochemical properties of rat atrial specific granules. It was found that these granules may be demonstrated using aldehyde fuchsin after pretreatments which involve oxidation or thiosulfation. This new way of demonstrating atrial granules is compared to other staining methods in terms of sensitivity and selectivity as well as to the nature of reactive groups that may be involved in the staining reactions. No lipid or carbohydrate were detected histochemically. Overall assessment of reactions suggests that atrial granules are a site of storage for a protein or polypeptide. Some of the tests indicate that these may contain tryptophan and sulfur-containing amino acids.

scholarly journals Profiling the Proteome-Wide Selectivity of Diverse Electrophiles

2021 ◽  
Author(s):  
Patrick R. A. Zanon ◽  
Fengchao Yu ◽  
Patricia Musacchio ◽  
Lisa Lewald ◽  
Michael Zollo ◽  
...  
Keyword(s):  
Amino Acids ◽  
Drug Discovery ◽  
Cysteine Residues ◽  
Covalent Inhibitors ◽  
Reactive Groups

<p><a>Targeted covalent inhibitors are powerful entities in drug discovery, but their application has so far mainly been limited to addressing cysteine residues. The development of cysteine-directed covalent inhibitors has largely profited from determining their proteome-wide selectivity using competitive residue-specific proteomics. Several probes have recently been described to monitor other amino acids using this technology and many more electrophiles exist to modify proteins. Nevertheless, a direct, proteome‑wide comparison of the selectivity of diverse probes is still entirely missing. Here, we developed a completely unbiased workflow to analyse electrophile selectivity proteome‑wide and applied it to directly compare 54 alkyne probes containing diverse reactive groups. In this way, we verified and newly identified probes to monitor a total of nine different amino acids as well as the <i>N</i>‑terminus proteome‑wide. This selection includes the first probes to globally monitor tryptophans, histidines and arginines as well as novel tailored probes for methionines, aspartates and glutamates.</a></p>

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