Morphology and Properties of Novel Blends Prepared from Simultaneous In Situ Polymerization and Compatibilization of Macrocyclic Carbonates and Maleated Poly(propylene)

2006 ◽  
Vol 207 (14) ◽  
pp. 1233-1243 ◽  
Author(s):  
Samy A. Madbouly ◽  
Joshua U. Otaigbe ◽  
Toshiaki Ougizawa
Keyword(s):  
In Situ Polymerization ◽  
Poly Propylene

Synthesis of Poly(propylene)/Graphite Nanocomposites by in Situ Polymerization

2011 ◽  
Vol 299-300 (1) ◽  
pp. 48-56 ◽  
Author(s):  
Larissa Stieven Montagna ◽  
Fabiana de Carvalho Fim ◽  
Griselda Barrera Galland ◽  
Nara Regina de Souza Basso
Keyword(s):  
In Situ Polymerization ◽  
Poly Propylene ◽  
Graphite Nanocomposites

Synthesis, characterization and properties of poly(propylene-1-octene)/graphite nanosheet nanocomposites obtained by in situ polymerization

Polymer ◽  
2015 ◽  
Vol 65 ◽  
pp. 134-142 ◽  
Author(s):  
Marcéo A. Milani ◽  
Darío González ◽  
Raúl Quijada ◽  
Rosario Benavente ◽  
Javier Arranz-Andrés ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Graphite Nanosheet ◽  
Poly Propylene

scholarly journals Bio-Based Furan-Polyesters/Graphene Nanocomposites Prepared by In Situ Polymerization

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1377
Author(s):  
Laura Sisti ◽  
Grazia Totaro ◽  
Annamaria Celli ◽  
Loris Giorgini ◽  
Simone Ligi ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Polymer Chains ◽  
Graphene Nanocomposites ◽  
Water Suspensions ◽  
Heat Distortion Temperature ◽  
Almost All ◽  
Poly Propylene ◽  
Ordered State ◽  
Intercalative Polymerization

In situ intercalative polymerization has been investigated as a strategic way to obtain poly(propylene 2,5-furandicarboxylate) (PPF) and poly(hexamethylene 2,5-furandicarboxylate) (PHF) nanocomposites with different graphene types and amounts. Graphene (G) has been dispersed in surfactant stabilized water suspensions. The loading range in composites was 0.25–0.75 wt %. For the highest composition, a different type of graphene (XT500) dispersed in 1,3 propanediol, containing a 6% of oxidized graphene and without surfactant has been also tested. The results showed that the amorphous PPF is able to crystallize during heating scan in DSC and graphene seems to affect such capability: G hinders the polymer chains in reaching an ordered state, showing even more depressed cold crystallization and melting. On the contrary, such hindering effect is absent with XT500, which rather induces the opposite. Concerning the thermal stability, no improvement has been induced by graphene, even if the onset degradation temperatures remain high for all the materials. A moderate enhancement in mechanical properties is observed in PPF composite with XT500, and especially in PHF composite, where a significative increase of 10–20% in storage modulus E’ is maintained in almost all the temperature range. Such an increase is also reflected in a slightly higher heat distortion temperature. These preliminary results can be useful in order to further address the field of application of furan-based polyesters; in particular, they could be promising as packaging materials.

The Influence of Clay-Like Sepiolite on the Structure and Properties of Polyurethaneurea/Sepiolite Nanocomposites

2011 ◽  
Vol 399-401 ◽  
pp. 486-492 ◽  
Author(s):  
Hui Zhen Lu ◽  
De Lian Yi ◽  
Hong Xiang Chen ◽  
Yu Zhou ◽  
Jin Long Zhang
Keyword(s):  
Hard Segment ◽  
In Situ Polymerization ◽  
Tensile Tests ◽  
Decomposition Temperature ◽  
Chemical Bonds ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Poly Propylene

A series of polyurethaneurea (PUU) nanocomposites based on clay-like sepiolite (Sp) with the modification of γ-aminopropyltriethoxysilane (KH550) were prepared via in situ polymerization from poly(propylene glycol), tolylene-2,4-diisocyanate (TDI) and 3,3'-dichloro-4,4'- diamino-diphenylmethane(MOCA). Morphology and structure of nanocomposites were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The results indicated that KH550-Sp was dispersed homogeneously in the PUU matrix, which facilitated the formation of chemical bonds between KH550-Sp and the hard segment of PUU. The thermostability and mechanical properties were studied by the thermogravimetric (TG) analysis and tensile tests. The results showed that the onset decomposition temperature and tensile strength of nanocomposites was higher than those of pure PUU.

Improvement in mechanical, physical and biological properties of eucalyptus and pine woods by raw pine resin in situ polymerization

2021 ◽  
Vol 166 ◽  
pp. 113495
Author(s):  
Andrey Pereira Acosta ◽  
Kelvin Techera Barbosa ◽  
Sandro Campos Amico ◽  
André Luiz Missio ◽  
Rafael de Avila Delucis ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Biological Properties ◽  
Pine Resin
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