Structure and Properties of Maleic Anhydride Capped Poly(propylene carbonate) Produced by Reactive Extrusion and Effect of Resistance Time on Reaction Efficiency

2014 ◽  
Vol 53 (37) ◽  
pp. 14544-14551 ◽  
Author(s):  
Guo Jiang ◽  
Jian Feng ◽  
Shui-Dong Zhang ◽  
Han-Xiong Huang
Keyword(s):  
Maleic Anhydride ◽  
Propylene Carbonate ◽  
Reactive Extrusion ◽  
Structure And Properties ◽  
Reaction Efficiency ◽  
Poly Propylene

Structure, and thermal and mechanical properties of poly(propylene carbonate) capped with different types of acid anhydride via reactive extrusion

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107547-107555 ◽  
Author(s):  
Guo Jiang ◽  
Jian Feng ◽  
Mengdi Zhang ◽  
Shuidong Zhang ◽  
Hanxiong Huang
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Propylene Carbonate ◽  
Phthalic Anhydride ◽  
Reactive Extrusion ◽  
Acid Anhydride ◽  
Pyromellitic Dianhydride ◽  
Thermal And Mechanical Properties ◽  
Different Types ◽  
Poly Propylene

Three types of anhydride (maleic anhydride (MA), phthalic anhydride (PA) and pyromellitic dianhydride (PMDA)) were melt blended to end-cap poly(propylene carbonate) (PPC) by reactive extrusion.

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.

scholarly journals Polypropylene grafted with maleic anhydride and styrene as a compatibilizer for biodegradable poly(propylene carbonate)/polypropylene

2019 ◽  
Vol 14 ◽  
pp. 155892501984971
Author(s):  
Zheng Tian ◽  
Lisha Pan ◽  
Qing Pan
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Maleic Anhydride ◽  
Fourier Transform Infrared Spectroscopy ◽  
Propylene Carbonate ◽  
Ring Opening ◽  
Fourier Transform Infrared ◽  
Resonance Spectroscopy ◽  
Ring Opening Reactions ◽  
Poly Propylene

Polypropylene grafted with maleic anhydride and styrene [PP- g-(MAH- co-St)] was prepared by melt grafting. Fourier transform-infrared spectroscopy showed that maleic anhydride in the form of cyclic anhydride was successfully grafted onto the main chains of polypropylene. PP- g-(MAH- co-St) acts as a compatibilizer for the poly(propylene carbonate)/polypropylene meltblown nonwoven fabric slices. The effect of different contents and grafting proportions of PP- g-(MAH- co-St) on the structure and performance of the poly(propylene carbonate)/polypropylene slices was investigated. The poly(propylene carbonate)/polypropylene slices had favorable compatibility, tensile properties, thermal stability, and degradability, and their melt flow rates were reduced by the addition of PP- g-(MAH- co-St). Fourier transform-infrared spectroscopy and 1H nuclear magnetic resonance spectroscopy spectra showed that ring-opening reactions occur between the anhydride functional groups of PP- g-(MAH- co-St) and poly(propylene carbonate). Ring-opening reactions, chemical bonds, cocrystallization, increased interface adhesion forces, and reduced interfacial tension may be the mechanisms by which PP- g-(MAH- co-St) acts a compatibilizer for poly(propylene carbonate)/polypropylene slices.

scholarly journals Effect of exchange reactions and free radical grafting on the high‐speed reactive extrusion of poly(butylene succinate) and poly(propylene carbonate) blends

2019 ◽  
Vol 59 (10) ◽  
pp. 1986-1998
Author(s):  
Bárbara A. Calderón ◽  
Conor W. Thompson ◽  
Vincenzo L. Barinelli ◽  
Matthew S. McCaughey ◽  
Margaret J. Sobkowicz
Keyword(s):  
Free Radical ◽  
Propylene Carbonate ◽  
High Speed ◽  
Reactive Extrusion ◽  
Exchange Reactions ◽  
Butylene Succinate ◽  
Poly Propylene

Structure and Properties of Poly(Propylene Carbonate)

1997 ◽  
Vol 3 (2) ◽  
pp. 131-143 ◽  
Author(s):  
Shengjie Wang ◽  
Yuhui Huang ◽  
Bin Liao ◽  
Guo Lin ◽  
Guangmin Cong ◽  
...  
Keyword(s):  
Propylene Carbonate ◽  
Structure And Properties ◽  
Poly Propylene

scholarly journals A Novel One-Pot Synthesis of Poly(Propylene Carbonate) Containing Cross-Linked Networks by Copolymerization of Carbon Dioxide, Propylene Oxide, Maleic Anhydride, and Furfuryl Glycidyl Ether

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 881 ◽  
Author(s):  
Lijun Gao ◽  
Xianggen Chen ◽  
Xiangjun Liang ◽  
Xiuzhi Guo ◽  
Xianling Huang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Weight Loss ◽  
Maleic Anhydride ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Dimensional Stability ◽  
Glycidyl Ether ◽  
One Pot ◽  
One Pot Synthesis ◽  
Poly Propylene

The thermoplastic poly(propylene carbonate) (PPC) containing cross-linked networks was one-pot synthesized by copolymerization of carbon dioxide, propylene oxide (PO), maleic anhydride (MA), and furfuryl glycidyl ether (FGE). The copolymers were characterized by Fourier transform infrared spectroscopy (FT-IR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) measurements. The thermal and dimensional stability of the copolymers were improved. When the MA and FGE load increased from 1 mol% to 4 mol% of PO, the copolymers contained the gel contents of 11.0%–26.1% and their yields were about double that of the PPC. The 5% weight-loss degradation temperatures (Td,-5%) and the maximum weight-loss degradation temperatures (Td,max) increased from 149.7–271.3 °C and from 282.6–288.6 °C, respectively, corresponding to 217.1 °C and 239.0 °C of PPC. Additionally, the hot-set elongation tests showed that the copolymers exhibited elasticity and dimensional stability with the minimum permanent deformation of 6.5% which was far less than that of PPC of 157.2%, while the tensile strengths were a little lower than that of PPC because of the following two conflicting factors, cross-links and flexibility of the units formed by the introduced third monomers, MA and FGE. In brief, we provide a novel method of one-pot synthesis of PPC containing cross-linked networks. According to this idea, the properties would be more extensively regulated by changing the cross-linkable monomers.

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