A one-step strategy for thermally and mechanically reinforced pseudo-interpenetrating poly(propylene carbonate) networks by terpolymerization of CO2, propylene oxide and pyromellitic dianhydride

2013 ◽  
Vol 1 (11) ◽  
pp. 3556 ◽  
Author(s):  
Lijun Gao ◽  
Jiuying Feng
Keyword(s):  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Pyromellitic Dianhydride ◽  
One Step ◽  
Poly Propylene

Chiral salenCo(iii) complexes with bulky substituents as catalysts for stereoselective alternating copolymerization of racemic propylene oxide with carbon dioxide and succinic anhydride

2021 ◽  
Vol 12 (12) ◽  
pp. 1776-1786
Author(s):  
Zhou Wang ◽  
Ying Mu
Keyword(s):  
Carbon Dioxide ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Succinic Anhydride ◽  
Poly Propylene ◽  
Alternating Copolymerization

Stereoregular poly(propylene carbonate)s and poly(propylene succinate-block-carbonate)s were synthesized with new chiral salenCo(iii) catalysts carrying bulky substituents.

scholarly journals Enhanced Poly(propylene carbonate) with Thermoplastic Networks: A Cross-Linking Role of Maleic Anhydride Oligomer in CO2/PO Copolymerization

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1467 ◽  
Author(s):  
Lijun Gao ◽  
Meiying Huang ◽  
Qifeng Wu ◽  
Xiaodan Wan ◽  
Xiaodi Chen ◽  
...  
Keyword(s):  
Weight Loss ◽  
Maleic Anhydride ◽  
Propylene Carbonate ◽  
Permanent Deformation ◽  
Cross Linking ◽  
Biodegradable Poly ◽  
One Step ◽  
Ft Ir ◽  
Poly Propylene

Cross-linking is an effective way to enhance biodegradable poly(propylene carbonate) (PPC) from CO2 and propylene oxide (PO). Cross-linked PPC can be prepared by one-step terpolymerization of multifunctional third monomers with CO2 and PO. However, few such third monomers are available. Each molecule of maleic anhydride oligomer (MAO) contains more than two cyclic anhydride groups. Here, we use it to synthesize PPC with cross-linked networks by adding a small quantity of MAO (0.625–5 wt% of PO) in CO2/PO copolymerization that was catalyzed by zinc glutarate. The formation of networks in the prepared copolymers was confirmed by the presence of gel in copolymers combined Fourier transform infrared spectroscopy (FT-IR), 1H NMR, and the improved mechanical properties. The 5% weight-loss degradation temperatures and maximum weight-loss degradation temperatures greatly increase up to 289.8 °C and 308.8 °C, respectively, which are remarkably high when compared to those of PPC. The minimum permanent deformation of the copolymers closes to 0, while that of PPC is 173%. The maximum tensile strength of the copolymers is 25.5 MPa higher than that of PPC, reaching 38.4 MPa, and it still has some toughness with the elongation at break of 25%. The above phenomena indicate that MAO that was inserted in PPC chains play a cross-linking role, which results in enhanced thermal stability, dimensional stability, and mechanical strength, comprehensively.

Aluminum porphyrin complexes via delicate ligand design: emerging efficient catalysts for high molecular weight poly(propylene carbonate)

RSC Advances ◽  
2014 ◽  
Vol 4 (96) ◽  
pp. 54043-54050 ◽  
Author(s):  
Xingfeng Sheng ◽  
Yong Wang ◽  
Yusheng Qin ◽  
Xianhong Wang ◽  
Fosong Wang
Keyword(s):  
Carbon Dioxide ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Ligand Design ◽  
Poly Propylene ◽  
High Molecular Weight Poly

Due to the deep concern over residual, toxic cobalt or chromium, bifunctional aluminum porphyrin complexes were prepared to catalyze the copolymerization of propylene oxide and carbon dioxide.

Biological affinity and biodegradability of poly(propylene carbonate) prepared from copolymerization of carbon dioxide with propylene oxide

2008 ◽  
Vol 16 (5) ◽  
pp. 473-480 ◽  
Author(s):  
Gahee Kim ◽  
Moonhor Ree ◽  
Heesoo Kim ◽  
Ik Jung Kim ◽  
Jung Ran Kim ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Biological Affinity ◽  
Poly Propylene
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