Effect of zinc stearate and/or epoxidized soybean oil on gelation and thermal stability of PVC-DOP plastigels

1999 ◽  
Vol 74 (10) ◽  
pp. 2488-2498 ◽  
Author(s):  
Hayr?? Baltacio?lu ◽  
Devr??m Balk�se
Keyword(s):  
Thermal Stability ◽  
Soybean Oil ◽  
Zinc Stearate ◽  
Epoxidized Soybean Oil ◽  
Thermal Stability Of

scholarly journals Triply Biobased Thermoplastic Composites of Polylactide/Succinylated Lignin/Epoxidized Soybean Oil

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 632 ◽  
Author(s):  
Jianbing Guo ◽  
Jian Wang ◽  
Yong He ◽  
Hui Sun ◽  
Xiaolang Chen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Impact Strength ◽  
Soybean Oil ◽  
Environmentally Friendly ◽  
Epoxidized Soybean Oil ◽  
Thermoplastic Composites ◽  
Dynamic Vulcanization ◽  
Elongation At Break ◽  
Rheological Behaviors ◽  
Thermal Stability Of

Soybean oil is beneficial to improve the compatibility between polylactide (PLA) and succinylated lignin (SAL), which leads to the preparation of a host of biobased composites containing PLA, SAL, and epoxidized soybean oil (ESO). The introduction of SAL and ESO enables the relatively homogeneous morphology and slightly better miscibility obtained from triply PLA/SAL/ESO composites after dynamic vulcanization compared with unmodified PLA. The rigidity of the composites is found to decline gradually due to the addition of flexible molecular chains. According to the reaction between SAL and ESO, the Tg of PLA/SAL/ESO composites is susceptible to the movement of flexible molecular chains. The rheological behaviors of PLA/SAL/ESO under different conditions, i.e., temperature and frequency, exhibit a competition between viscidity and elasticity. The thermal stability of the composites displays a slight decrease due to the degradation of SAL and then the deterioration of ESO. The elongation at break and notched impact strength of the composites with augmentation of ESO increase by 12% and 0.5 kJ/m2, respectively. The triply biobased PLA/SAL/ESO composite is thus deemed as a bio-renewable and environmentally friendly product that may find vast applications.

Thermal stability of epoxidized soybean oil and its absorption and migration in poly(vinylchloride)

2012 ◽  
Vol 53 (8) ◽  
pp. 1645-1656 ◽  
Author(s):  
Bin Sun ◽  
Bharat Indu Chaudhary ◽  
Chun-Yin Shen ◽  
Di Mao ◽  
Dong-Ming Yuan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Soybean Oil ◽  
Epoxidized Soybean Oil ◽  
And Migration ◽  
Thermal Stability Of

scholarly journals Zinc stearate from galvanizing waste materials and its use as thermal stabilizer in PVC industries

2016 ◽  
Vol 51 (4) ◽  
pp. 261-270
Author(s):  
FK Rony ◽  
SK Ray ◽  
A Hoque ◽  
M Asaduzzaman ◽  
S Sultana ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Product Yield ◽  
Zinc Stearate ◽  
Waste Materials ◽  
Precipitation Method ◽  
Thermal Stabilizer ◽  
Thermo Gravimetric Analyzer ◽  
Lead Zinc ◽  
Zinc Dross ◽  
Thermal Stability Of

Galvanizing industries of Bangladesh produce profuse amount of environmentally hazardous solid waste materials like zinc dross which contains significant amount of valuable zinc and harmful heavy lead. Zinc was extracted as zinc chloride (ZnCl2) from zinc dross. Zinc stearate (ZnSt2) samples were prepared by precipitation method from stearic acid, sodium hydroxide and ZnCl2 by varying the amount of the reagents and product yield found within the range 96.06-99.18%. Characteristic peaks of ZnSt2 were investigated by Fourier Transform Infrared Spectroscopy (FTIR). Differential Scanning Calorimeter (DSC) onset curve assigned accurate melting point within the range 122.84-124.03°C. Surface morphology of ZnSt2 was observed by Scanning Electron Microscope (SEM) and products had semi-crystalline structure. Thermal stability of ZnSt2 was evaluated by Thermo-gravimetric Analyzer (TGA) that complied with literature. A combination of ZnSt2 and Calcium stearate (CaSt2) at 1:1 ratio was used as thermal stabilizer in the powder commercial grade PVC resin and performed better thermal stability. The dehydrochlorination temperature of PVC with mixed stearates was 344.67±1.04°C for 10% (w/w) loading whereas for PVC, PVC with 10% (w/w) ZnSt2 and PVC with 10% (w/w) CaSt2, it was 269.83±1.04°C, 317.33±1.26°C and 323.33±2.08°C respectively.Bangladesh J. Sci. Ind. Res. 51(4), 261-270, 2016

Preparation and Characterization of Novel Rigid Polyurethane Foams by Epoxidized Soybean Oil

2011 ◽  
Vol 183-185 ◽  
pp. 1581-1585 ◽  
Author(s):  
Ming He ◽  
Yi Jun Shi ◽  
Zhen Yang Luo ◽  
Xiao Li Gu
Keyword(s):  
Thermal Stability ◽  
Compressive Strength ◽  
Soybean Oil ◽  
Carbon Chain ◽  
Polyurethane Foams ◽  
Epoxidized Soybean Oil ◽  
Rigid Polyurethane Foam ◽  
Dsc Analysis ◽  
Rigid Foam

A novel rigid polyurethane foam was prepared by using epoxidized soybean oil (ESBO) instead of 50% of petrochemical polyol-835 in the B-side of foam formulation. Although there are no significant variations in density and compressive strength of ESBO-based rigid foam compared with petrochemical-based rigid foam, better thermal stability and higher melting point (of polyether section) were attained and proved by TGA, DTG and DSC analysis. Presumably, the improved characterizations could be originated from the long carbon chain of ESBO and especially the oxazolidone structure as indicated in FTIR spectrum.

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