Polyhedral oligomeric silsesquioxane (POSS)–siloxane-modified polyimide (PI) hybrid nanocomposites were prepared by the reaction of siloxane-modified polyamic acid (PAA) with octaaminophenylsilsesquioxane (OAPS). PAA was prepared by the reaction of 4,4-diaminodiphenylsulfone with pyromellitic dianhydride in N-methylpyrrolidone (NMP), followed by the reaction of PAA with bis(3-aminopropyl) polydimethylsiloxane to obtain siloxane-modified. The siloxane-modified PI was further blended with varying weight percentages of OAPS using NMP solution. The reactions occurred during the formation of hybrid nanocomposites were confirmed by Fourier transform infrared spectra. The siloxane-modified PI OAPS nanocomposites were characterized for their thermal properties using differential scanning calorimeter and by thermogravimetric analysis. Morphological studies of the nanocomposites indicate that the incorporation of siloxane moieties creates heterogeneous morphology. Data from thermal studies indicate that the incorporation of POSS appreciably enhanced the glass transition temperature, thermal stability, and char yield of hybrid nanocomposites compared to neat PI.
XieKZhangYYuY. Preparation and characterization of cellulose hybrids grafted with the polyhedral oligomeric silsesquioxanes. Carbohydr Polym2009; 77: 858–862.
2.
GuoXGuoHFuLZhangHCarlosLDDengR. Synthesis and photophysical properties of novel organic-inorganic hybrid materials covalently linked to a europium complex. J Photochem Photobiol A: Chem2008; 200: 318–324.
ZhaoJFuYLiuS. Polyhedral oligomeric silsesquioxane modified thermoplastic and thermosetting nanocomposites: a review. Polym Polym Compos2008; 62(2): 483–500.
10.
LaiYSTsaiCWYangHWWangGPWuKH. Structural and electrochemical properties of polyurethanes/polyhedral oligomeric silsesquioxane hybrid coating on aluminium alloys. Mater Chem Phys2009; 117: 91–98.
PuKYZhangBMaPWangXYFanQLHungW. Synthesis, morphology and photophysics of novel hybrid organic–inorganic polyhedral oligomeric silsesquioxane-tethered poly(fluorenyleneethynylene)s. Polymer2006; 47: 1970–1978.
13.
NivasuMVTammisshettiJ. Hydrophobically graded polyester polyol acrylate polymers: synthesis, characterization, and microencapsulation of sulfamethoxazole for controlled release application. J Appl Polym Sci2006; 102: 4058–4065.
14.
TurriSLeviM. Structure, dynamic properties and surface behaviour of nanostructured ionomeric polyurethanes from reactive polyhedral oligomeric silsesquioxane. Macromolecules2005; 38: 5569–5574.
15.
ScitDW. Thermal rearrangement of branched-chain methylsiloxanes. J Am Chem Soc1946; 68(3): 356–358.
16.
BourbigotSTurfTBellayarSDusquesneS. Polyhedral oligomeric silsesquioxane as flame retardant for thermoplastic polyurethane. Polym Degrad Stab2009; 94: 1230–1237.
17.
ImaeIKawakamiYOoyamaYHarimaY. Solid state photoluminescence property of a novel POSS-based material having carbazole. Macromol Symp2007; 250(1): 50–55.
18.
MetinAKGacalBKiskanBYagciYToppareL. Enhancing electrochromic properties of polypyrrole by silsesquioxane nanocages. Polymer2008; 49: 2202–2210.
19.
LaineRMChoiJLeeI. Organic-inorganic nanocomposite with completely defined interfacial interactions. Adv Mater2001; 13: 800–803.
20.
KohKSugiyamaSMorinaganTOhnoKTSujiiYFukudaT. Precision synthesis of a fluorinated polyhedral oligomeric silsesquioxane-terminated polymer andsurface characterization of its blend film with poly(methyl methacrylate). Macromolecules2005; 38: 1264–1270.
21.
ProvatasAMatisonsJC. Silsesquioxanes: synthesis and applications. Trends Polym Sci1997; 5: 327–332.
PescarmonaPPMaschmeyerT. Oligomeric silsesquioxanes: synthesis, characterization and selected applications. Aust J Chem2001; 54: 583–596.
24.
LaineRMZhangCSellingerAViculisL. Polyfunctional cubic silsesquioxanes as building blocks for organic/inorganic hybrids. Appl Organomet Chem1998; 12: 715–723.
25.
FuBXZhangWHHsiaoBSRafailovichMSokolovJJohanssonG. Synthesis and characterization of segmented polyurethanes containing polyhedral oligomeric silsesquioxanes nanostructured molecules. High Perform Polym2000; 12(4): 565–571.
26.
LeuCChangYWeiK. Polyimide-side-chain tethered polyhedral oligomeric silsesquioxane nanocomposites for low-dielectric film applications. Chem Mater2003; 15: 3721–3727.
SellingerALaineRM. Silsesquioxane as synthetic platforms thermally curable and photocurable inorganic/organic hybrids. Macromolecules1996; 29: 2327–2330.
29.
YongNZhanS. A novel photocrosslinkable polyhedral oligomeric silesquioxane with poly (vinyl cinnamate). Chem Mater2004; 16: 5141–5148.
30.
Jothi BasuSPremkumarSAlagarMHamertonI. Synthesis and characterization of a POSS-maleimide precursor for hybrid nanocomposites. High Perform Polym2007; 20: 67–85.
31.
SunJTHuangYDCaoHLGongGF. Effects of ambient temperature curing agents on the thermal stability of poly (methylphenyl siloxane). Polym Degrad Stab2004; 85(1): 725–731.
32.
JovanovicJDGovedaricaMNDvornicPRPopovicIG. The thermogravimetric analysis of some polysiloxanes. Polym Degrad Stab1998; 61(1): 87–93.
33.
TamakiRChoiJLaineRM. A polyimide nanocomposite from octa(aminophenyl)silsesquioxane. Chem Mater2003; 15: 793–797.
34.
MathivananLArofAK. Degradation of silicone coating in high temperature atmosphere. Anti-Corros Method Mater1998; 45(6): 403–412.
KeijmanK. Use of novel siloxane hybrid polymers in protective coating. Oil Gas Eur Mag1997; 23(3): 38–40.
37.
TorreLKennayJMMaezzoliAM. Degradation behaviour of a composite material for thermal protection systems. Part 1. Experimental characterization. J Mater Sci1998; 33(12): 3137–3143.
38.
Ashok KumarAMaheshKPODinakaranKAlagarM. Studies on thermal and morphological characteristic of E-glass/Kevlar 49 reinforced siliconized epoxy composites. Eur Polym J2000; 36: 2449–2454.
WatanabeYSankiYShibasakiYAndoSUedaMOishiY. Synthesis of wholly alicyclic polyimides from N-silylated alicyclic diamines and alicyclic dianhydrides. Macromolecules2002; 35: 2277–2281.
49.
MatusuuraTYamadaNNishiSHasudaY. Polyimides derived from 2, 2′-Bis (trifluoromethyl)-4,4′-diaminobiphenyl. 3. Property control for polymer blends and copolymerization of fluorinated polyimides. Macromolecules1993; 26: 419–423.
50.
WuSHayakamaTKakimotoM. Synthesis and characterization of organosoluble polysiloxaneimides derived from siloxane containing aliphatic dianhydride and various aromatic diamines properties. High Perform Polym2008; 20: 281–295.
51.
ShoumingWUHayakawaTKikuchiRGrunzingerJSKakimotoM. Synthesis and characterization of semiaromatic polyimides containing POSS in main chain derived from double-decker-shaped silsesquioxane. Macromolecules2007; 40: 5698–5705.
52.
HsuTCJLiuZL. Solvent effect on the curing of polyimide resins. J Appl Poly Sci1992; 46(10): 1821–1833.
SeckinTKoytepeSAdiguzel IbrahimH. Molecular design of POSS core star polyimides as a route to low-k dielectric materials. Mater Chem Phys2008; 112: 1040–1046.
56.
Dine HartRAWrightWW. Preparation and fabrication of aromatic polyimides. J Appl Polym Sci1967; 11: 609–627.
57.
SeinoMHayakawaTIshidaYKakimotoAOikamaH. Hydrosilylation polymerization of double-decker-shaped silsesquioxane having hydrosilane with diynes. Macromolecules2006; 39: 3473–3475.
58.
YangSYGeZYYinDXLiuJGLiYFFanL. Synthesis and characterization of novel fluorinated polyimides derived from 4,4′-[2,2,2-trifluoro-1-(3-trifluoromethylphenyl)ethylidene]diphthalic anhydride and aromatic diamines. J Polym Sci Part A Polym Chem2004; 42: 4143–4152.
59.
YiMHHuangWJinMYChoiKY. Synthesis and characterization of soluble polyimides from 1, 1-Bis (4-aminophenyl) cyclohexane derivatives. Macromolecules1997; 30: 5606–5611.
60.
RashidESAAriffinKKooiCCAkilHM. Preparation and properties of POSS/Epoxy composites for electronic packaging applications. Mater Des2009; 30: 1–8.
