Biobased long-chain aliphatic polyesters of 1,12-dodecanedioic acid with a variety of diols: Odd-even effect and mechanical properties

2019 ◽  
Vol 19 ◽  
pp. 450-458 ◽  
Author(s):  
Changfeng Zhou ◽  
Zhiyong Wei ◽  
Yang Yu ◽  
Shengnan Shao ◽  
Xuefei Leng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aliphatic Polyesters ◽  
Dodecanedioic Acid ◽  
Long Chain

scholarly journals Improving Rheological and Mechanical Properties of Various Virgin and Recycled Polypropylenes by Blending with Long-Chain Branched Polypropylene

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1137
Author(s):  
Sascha Stanic ◽  
Thomas Koch ◽  
Klaus Schmid ◽  
Simone Knaus ◽  
Vasiliki-Maria Archodoulaki
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Tensile Test ◽  
Reactive Extrusion ◽  
Original Material ◽  
Melt Flow Rate ◽  
Single Screw Extruder ◽  
Pp Blends ◽  
The Impact ◽  
Long Chain

Blends of two long-chain branched polypropylenes (LCB-PP) and five linear polypropylenes (L-PP) were prepared in a single screw extruder at 240 °C. The two LCB-PPs were self-created via reactive extrusion at 180 °C by using dimyristyl peroxydicarbonate (PODIC C126) and dilauroyl peroxide (LP) as peroxides. For blending two virgin and three recycled PPs like coffee caps, yoghurt cups and buckets with different melt flow rate (MFR) values were used. The influence of using blends was assessed by investigating the rheological (dynamic and extensional rheology) and mechanical properties (tensile test and impact tensile test). The dynamic rheology indicated that the molecular weight as well as the molecular weight distribution could be increased or broadened. Also the melt strength behavior could be improved by using the two peroxide modified LCB-PP blends on the basis of PODIC C126 or PEROXAN LP (dilauroyl peroxide). In addition, the mechanical properties were consistently enhanced or at least kept constant compared to the original material. In particular, the impact tensile strength but also the elongation at break could be increased considerably. This study showed that the blending of LCB-PP can increase the investigated properties and represents a promising option, especially when using recycled PP, which demonstrates a real “up-cycling” process.

Macromolecular Design of Aliphatic Polyesters with Maintained Mechanical Properties and a Rapid, Customized Degradation Profile

2011 ◽  
Vol 12 (6) ◽  
pp. 2382-2388 ◽  
Author(s):  
Sofia Målberg ◽  
Anders Höglund ◽  
Ann-Christine Albertsson
Keyword(s):  
Mechanical Properties ◽  
Aliphatic Polyesters

Gas Barrier and Thermal Behavior of Long Chain Aliphatic Polyesters after Stressed Treatments

2016 ◽  
Vol 56 (1) ◽  
pp. 71-82 ◽  
Author(s):  
Matteo Gigli ◽  
Laura Genovese ◽  
Nadia Lotti ◽  
Andrea Munari ◽  
Marco Dalla Rosa ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Gas Barrier ◽  
Aliphatic Polyesters ◽  
Long Chain

scholarly journals Molecular layer deposited alucone thin films from long-chain organic precursors: from brittle to ductile mechanical characteristics

2020 ◽  
Vol 49 (31) ◽  
pp. 10832-10838
Author(s):  
Janne-Petteri Niemelä ◽  
Nadia Rohbeck ◽  
Johann Michler ◽  
Ivo Utke
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Mechanical Characteristics ◽  
Molecular Layer ◽  
Organic Films ◽  
Organic Precursor ◽  
Organic Precursors ◽  
Long Chain

We tailor mechanical properties of molecular-layer-deposited inorganic–organic films through control over the organic precursor length, relevant for battery applications.

Polyethylene like polymers. Aliphatic polyesters of dodecanedioic acid

2003 ◽  
Vol 39 (4) ◽  
pp. 655-661 ◽  
Author(s):  
Giancarlo Barbiroli ◽  
Cesare Lorenzetti ◽  
Corrado Berti ◽  
Maurizio Fiorini ◽  
Piero Manaresi
Keyword(s):  
Aliphatic Polyesters ◽  
Dodecanedioic Acid

scholarly journals Modification of nano-sized layered double hydroxides by long-chain organic aliphatic surfactants

2008 ◽  
Vol 73 (3) ◽  
pp. 321-331 ◽  
Author(s):  
Ramasamy Anbarasan ◽  
Wanduc Lee ◽  
Seung Soon
Keyword(s):  
Thermal Stability ◽  
Layered Double Hydroxides ◽  
Exchange Process ◽  
Xrd Analysis ◽  
Basal Spacing ◽  
Ion Exchange Process ◽  
Dodecanedioic Acid ◽  
Double Hydroxides ◽  
Thermal Stability Of ◽  
Long Chain

The inter-layer anion of layered double hydroxides (LDH) with a hydrotalcite (HT)-like structure was ion-exchanged with various organic surfactants, particularly with long chain aliphatic surfactants. After the ion-exchange process, the basal spacing of the LDH was increased and the increase of the basal spacing depended on various factors, such as the intercalation capacity functionality and orientation capability of the surfactant. Of the employed surfactants, stearic acid intercalated LDH showed the highest increase of the basal spacing, which was confirmed by XRD analysis. FTIR results supported the interaction of the surfactants with the LDH. In addition, an increase in the thermal stability of the dodecanedioic acid intercalated HT was evidenced by the TGA method.

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