scholarly journals Efficient Thermal Stabilization of Polyvinyl Chloride with Tannin-Ca Complex as Bio-Based Thermal Stabilizer

2015 ◽  
Vol 06 (05) ◽  
pp. 360-372 ◽  
Author(s):  
Hussein A. Shnawa ◽  
Moayad N. Khalaf ◽  
Yousef Jahani ◽  
Abed Alameer H. Taobi
Keyword(s):  
Polyvinyl Chloride ◽  
Thermal Stabilization ◽  
Thermal Stabilizer

scholarly journals Facile synthesis of exfoliated vermiculite nanosheets as a thermal stabilizer in polyvinyl chloride resin

RSC Advances ◽  
2019 ◽  
Vol 9 (34) ◽  
pp. 19675-19679
Author(s):  
Weiliang Tian ◽  
Zhong Li ◽  
Kewei Zhang ◽  
Zhenhong Ge
Keyword(s):  
Thermal Stability ◽  
Hydrogen Chloride ◽  
Anion Exchange ◽  
Polyvinyl Chloride ◽  
Facile Synthesis ◽  
Excellent Thermal Stability ◽  
Thermal Stabilizer

Well-defined vermiculite nanosheets are exfoliated by a facile water-assisted anion-exchange approach. As its negatively charged laminates can stabilize hydrogen chloride, the VMT nanosheets show excellent thermal stability for PVC resin.

Thermal stabilization of polyvinyl chloride by group II metal laurates1,2

1969 ◽  
Vol 13 (6) ◽  
pp. 1247-1252 ◽  
Author(s):  
Rudolph D. Deanin ◽  
Howard H. Reynolds ◽  
Yurdagul Ozcayir
Keyword(s):  
Polyvinyl Chloride ◽  
Thermal Stabilization ◽  
Group Ii

scholarly journals Sintesis Merkaptoetil Karboksilat sebagai Bahan Baku Stabiliser Termal Polivinil Klorida: Variasi Sumber Asam Lemak

2020 ◽  
Vol 18 (2) ◽  
pp. 47
Author(s):  
I Dewa Gede Arsa Putrawan ◽  
Adli Azharuddin ◽  
Dendy Adityawarman ◽  
Dicka Ar Rahim
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyvinyl Chloride ◽  
Raw Materials ◽  
Batch Reactor ◽  
Strong Acid ◽  
Raw Material ◽  
Thermal Stabilizer ◽  
Palm Fatty Acid Distillate ◽  
Rigid Pvc

Abstrak. Merkaptoetil karboksilat merupakan bahan baku stabiliser termal polivinil klorida atau polyvinyl chloride (PVC) berbasis timah organik. Stabiliser termal perlu ditambahkan ke dalam resin PVC sebelum diekstrusi untuk mencegah kerusakan karena pengerjaan panas. Stabiliser termal PVC dari timah organik dikenal sangat efektif, khususnya untuk aplikasi PVC kaku seperti pipa dan bingkai jendela. Penelitian ini bertujuan mengevaluasi sintesis merkaptoetil karboksilat dari asam lemak dan merkapto etanol dengan variasi sumber asam lemak yang meliputi asam lemak sawit, dedak padi dan biji kapuk. Percobaan dilakukan dalam sebuah reaktor partaian (batch) dengan asam kuat sebagai katalis. Percobaan dilakukan pada temperatur 60-80°C dan ekses merkapto etanol 10%. Kinerja sintesis dievaluasi melalui pengukuran kadar gugus merkaptan dan angka asam dalam produk serta perolehan produk. Pada rentang temperatur 60-80°C, ketiga asam lemak memberikan produk dengan kadar merkaptan pada rentang 6,4-7,8%.  Temperatur 70°C merupakan temperatur terbaik karena menghasilkan produk dengan kadar merkaptan tertinggi tanpa memadat selama penyimpanan. Pada temperatur ini, produk memiliki angka asam pada rentang 11-41 mg KOH/g dan perolehan pada rentang 70-81%. Ketiga sumber asam lemak memberikan produk dengan kadar merkaptan yang mencukupi untuk dapat digunakan sebagai bahan baku stabiliser PVC. Mempertimbangkan kualitas produk dan ketersediaan di pasaran, distilat asam lemak sawit dipandang sebagai bahan baku yang paling baik. Kata kunci: asam lemak, merkaptoetil karboksilat, polivinil klorida, stabiliser termal. Abstract. Synthesis of Mercaptoethyl Carboxylate as Raw Materials for Polyvinyl Chloride Thermal Stabilizer: Variation in Fatty Acid Source. Mercaptoethyl carboxylate is a raw material for organotin-based polyvinyl chloride (PVC) thermal stabilizer. Thermal stabilizers need to be added to the PVC resin before extruded to prevent degradation due to heat treatment. Organotin PVC stabilizers are known to be very effective, especially for rigid PVC applications such as pipes and frames. This study was aimed to evaluate the synthesis of mercaptoethyl carboxylate from fatty acids and mercaptoethanol with various sources of fatty acids including palm, rice bran and kapok seed fatty acids. The experiment was carried out in a batch reactor with a strong acid as a catalyst. The experiments were conducted at 60-80°C and 10% mercapto ethanol excess. The performance of synthesis was evaluated by measuring mercaptan and acid contents and yield. In the range of 60-80°C, all three fatty acids provided products with mercaptan levels in the range of 6.4-7.8%. A temperature of 70°C is the best temperature as it gave a product with the highest mercaptan content without solidification during storage. At this temperature, the product had acid values in the range 11-41 mg KOH/g and yields in the range of 70-81%. Considering product quality and availability in the market, palm fatty acid distillate was seen as the best raw material. Keywords: fatty acid, mercaptoethyl carboxylate, polyvinyl chloride, thermal stabilizer. Graphical Abstract

scholarly journals Stabilizing Effect of Biobased Additives on the Thermal Degradation of PVC

2010 ◽  
Vol 1 ◽  
pp. 47-56
Author(s):  
T.O. Egbuchunam ◽  
F.E. Okieimen ◽  
D.B. Balköse
Keyword(s):  
Thermal Degradation ◽  
Seed Oil ◽  
Thermal Stabilization ◽  
Aqueous Alcohol ◽  
Scanning Calorimetry ◽  
Thermal Methods ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Thermal Stabilizer ◽  
Stabilizing Effect

Novel biobased additives prepared from rubber seed oil were evaluated as thermal stabilizer for PVC. Divalent metal (barium and cadmium) soaps of rubber seed oil were prepared by metathesis in aqueous alcohol and characterized by thermal methods (differential scanning calorimetry and thermogravimetry). The stabilizing effect of the soaps and their admixtures on the thermal degradation of PVC powder and plasticized PVC was examined by dynamic thermogravimetry and dehydrochlorination studies at 160oC using the Thermomat equipment. The metal soaps showed multiple decomposition endotherms but were generally stable (with weight loss less than 5%) within the temperature range (180 – 220oC) frequently used in the processing of PVC. Using the Broido model, values of apparent activation energy of decomposition of between 50 and 200 kJmol-1 were obtained for the soaps. The biobased additives were found to be relatively effective in stabilizing PVC in powder and plasticized forms against thermal degradation. Using inhibition/retardation time, temperature of incipient decomposition, and temperature at which various extents of decomposition was attained as indices of thermal stabilization, the results from this study indicate a potential for the application of the biobased additives as thermal stabilizer for PVC in rigid and flexible formulations.

Evaluation of the thermal stabilization effect of polymeric dioctyltin maleate on polyvinyl chloride

2015 ◽  
Vol 88 (9) ◽  
pp. 1539-1550 ◽  
Author(s):  
Jianping Liu ◽  
Xia Song ◽  
Mingpei Tang ◽  
Hongzhou Shang ◽  
Li Yan
Keyword(s):  
Polyvinyl Chloride ◽  
Thermal Stabilization ◽  
Stabilization Effect

scholarly journals Synthesis, characterization and Stydy thermal stabilization effect of calcium complex of anthocyanin on the poly (vinyl chloride)

2021 ◽  
Vol 2063 (1) ◽  
pp. 012005
Author(s):  
Hikmat A Ali ◽  
Hussein A Shnawa ◽  
Dhiaa A Abidalimam
Keyword(s):  
Thermal Degradation ◽  
Vinyl Chloride ◽  
Thermal Stabilization ◽  
Mixing Ratio ◽  
Scanning Calorimetry ◽  
Thermal Stabilizer ◽  
Poly Vinyl Chloride ◽  
Stabilization Effect ◽  
Degradation Reaction ◽  
Dehydrochlorination Reaction

Abstract In this study, calcium complex of anthocyanin was synthesized from anthocyanin, a flavonoid type natural phenolic product, which was extracted from eggplant peel. The structure of Ca-anthocyanin was characterized by FTIR spectroscopy. Its efficiency as bio-based thermal stabilizer to stabilize poly (vinyl chloride) was investigated and compared to that of Reapak B-NT/7060, a Ca/Zn-based commercial stabilizer. The influence of Ca-anthocyanin complex on the thermal degradation reaction of PVC was monitored by differential scanning calorimetry (DSC). The results indicated that the Ca-anthocyanin complex is an efficient thermal stabilizer and it reduces the rate of dehydrochlorination reaction of PVC already at a concentration as small as 2 phr, part per hundred of PVC resin. The thermal degradation reaction of PVC through the first degradation stage is clearly limited by the addition of Ca-anthocyanin complex as single (primary) stabilizer. Its efficiency is similar to that of Reapak B-NT/7060 used as reference stabilizer and it can enhance the performance of commercial stabilizer when used as co-stabilizer at mixing ratio (1:1). This study has allowed verifying and validating the usefulness of environmental friendly thermal stabilizer for PVC with very evident stabilization effect.

Evaluation of the Thermal Stabilization Effect of the Bis (Mercaptoethanol Oleate) Dimethyl Tin on Polyvinyl Chloride

2012 ◽  
Vol 581-582 ◽  
pp. 81-84
Author(s):  
Jian Ping Liu ◽  
Hong Zhou Shang ◽  
Xia Song ◽  
Wei Yuan ◽  
Shu Mei Zhou
Keyword(s):  
Polyvinyl Chloride ◽  
Tensile Testing ◽  
Testing Machine ◽  
Thermal Stabilization ◽  
Elongation Rate ◽  
Tensile Testing Machine ◽  
Thermal Stabilities ◽  
Elongation At Break ◽  
Stabilization Effect ◽  
Thermal Stability Of

Bis (mercaptoethanol oleate) dimethyl tin was synthesized and added to polyvinyl chloride (PVC) with various ratios. Specimens were prepared by mixing and rolling through a double-roller mixer, and their static thermal stabilities were estimated by the oven static thermal aging experiments. The influence of the bis (mercaptoethanol oleate) dimethyl tin on the dynamic thermal stability of PVC was tested through a haack torque rheometer (HAAKE PolyLab QC). The tensile strength and rate of elongation at break of the PVC specimens were evaluated by a servo-controlled tensile testing machine. The results show that the bis (mercaptoethanol oleate) dimethyl tin has excellent static and dynamic thermal stabilization effect on PVC, and to some extent, can improve the breaking elongation rate the PVC sample.

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