A phenylethynyl-terminated imide oligomer (PETI)was prepared from a triamine and 4-phenylethynylphthalic anhydride. The oligomer can be used to prepare high performance resin-based composite material via resin transfer moulding due to its low melt viscosity. The cured resin also exhibited excellent thermal stability with 5% weight loss at temperature above 531°C and higher glass transition temperature Tg (410°C) than PETI series as a result of the introduction of star-branched units. The rheological properties of the oligomer were measured and numerically fit with the dual Arrhenius model. The curing of the resin was also studied by dynamic and isothermal differential scanning calorimetry measurements. Based on the experimental data, both the curing reaction rate and the curing degree were calculated in the dynamic mode and tested under isothermal conditions.
OthmanMBHRamliRAriffAM. Thermal properties of polyimide system containing silicone segments. J Therm Anal Calorim2011; 109: 1515–1523.
4.
MeyerGWPakSJLeeYJ. New high-performance thermosetting polymer matrix material systems. Polymer1995; 36: 2303–2309.
5.
HsiaoSHYangCPChuKY. Synthesis and properties of poly(ether imide)s having ortho-linked aromatic units in the main chain. Macromolecules1997; 30: 165–170.
6.
WrightMESchorzmanDABermanAM. Accelerated curing of aryl-ethynyl end-capped polyimide oligomers and model compounds: a kinetic study probing substituent effects. Macromolecules2002; 35: 6550–6556.
7.
YangYFanLQuX. Fluorinated phenylethynyl-terminated imide oligomers with reduced melt viscosity and enhanced melt stability. Polymer2011; 52: 138–148.
8.
RaoXZhouHDangG. New kinds of phenylethynyl-terminated polyimide oligomers with low viscosity and good hydrolytic stability. Polymer2006; 47: 6091–6098.
9.
IqbalMNorderBMendesE. All-aromatic liquid crystalline thermosets with high glass transition temperatures. J Polym Sci A Polym Chem2009; 47: 1368–1380.
10.
FangXRogersDFScolaDA. A study of the thermal cure of a phenylethynyl-terminated imide model compound and a phenylethynyl-terminated imide oligomer (PETI-5). J Polym Sci A Polym Chem1998; 36: 461–470.
11.
JohnstonJALiFMHarrisFW. Synthesis and characterization of imide oligomers end-capped with 4-(phenylethynyl)phthalic anhydrides. Polymer1994; 35: 4865–4873.
12.
ConnellJWSmithJGHergenrotherPM. Imide oligomers containing pendent and terminal phenylethynyl groups-II. High Perform Polym1998; 10: 273–283.
13.
JayaramanSSrinivasanRMcGrathJE. Synthesis and characterization of 3-phenylethynyl endcapped matrix resins. J Polym Sci A Polym Chem1995; 33: 1551–1563.
ChoDDrzalLT. Characterization, properties, and processing of LaRCTM PETI-5 as a high-temperature sizing material. I. FTIR studies on imidization and phenylethyny end-group reaction behavior. J Appl Polym Sci2000; 76: 190–200.
16.
ConnellJWSmithJGHergenrotherPM. High temperature transfer molding resins: laminate properties of PETI-298 and PETI-330. High Perform Polym2003; 15: 375–394.
17.
SmithJGConnellJWLiCJ. Microwave synthesis of phenylethynyl imide oligomers: neat resin and composite properties of PETI-2982-4. High Perform Polym2006; 18: 341–354.
18.
KimYHWebsterOW. Water soluble hyperbranched polyphenylene: “a unimolecular micelle?”J Am Chem Soc1990; 112: 4592–4593.
19.
JikeiMKakimotoM. Hyperbranched polymers: a promising new class of materials. Prog Polym Sci2001; 26: 1233–1285.
20.
WuFIShuCF. Synthesis and characterization of new hyperbranched poly(aryl ether oxadiazole)s. J Polym Sci A Polym Chem2001; 39: 3851–3860.
21.
LinQLongTE. Synthesis and characterization of a novel AB2 monomer and corresponding hyperbranched poly(arylene ether phosphine oxide)s. J Polym Sci A Polym Chem2000; 38: 3736–3741.
SimoneCDScolaDA. Phenylethynyl end-capped polyimides derived from 4,4′-(2,2,2-trifluoro-1-phenylethylidene)diphthalic anhydride, 4,4′-(hexafluoroisopropylidene)diphthalic anhydride, and 3,3′,4,4′-biphenylene dianhydride: structure–viscosity relationship. Macromolecules2003; 36: 6780–6790.
24.
JohnstonJALiFMHarrisFW. Synthesis and characterization of imide oligomers end-capped with 4-(phenylethynyl)phthalic anhydrides. Polymer1994; 35: 4865–4873.
25.
ArgyropoulosSBolkerHI.Gel degradation theory. 1. An experimental verification with a model trifunctional network. Macromolecules1987; 20: 2915–2922.
26.
ZiffRMMcGradyED. Kinetics of polymer degradation. Macromolecules1986; 19: 2513–2519.
27.
MussattiFGMacoskoCW. Rheology of network forming systems. Polym Eng Sci1973; 13: 236–240.
28.
TajimaYACorzierD. Thermokinetic modeling of an epoxy resin I. Chemoviscosity. Polym Eng Sci1983; 23: 186–190.
29.
RollerMB. Rheology of curing thermosets: a review. Polym Eng Sci1986; 26: 432–440.
HinkleyJA. DSC study of the cure of a phenylethynyl terminated imide oligomers. J Adv Mater1994; 27: 55–59.
34.
HollandTVGlassTEMcGrathJE. Investigation of the thermal curing chemistry of the phenylethynyl group using a model aryl ether imide. Polymer2000; 41: 4965–4990.
35.
CriadoJMMalekJOrtegaA. Applicability of the master plots in kinetic analysis of non-isothermal data. Thermochim Acta1989; 147: 377–385.
36.
OzawaT. Kinetic analysis of derivative curves in thermal analysis. J Therm Anal1970; 2: 301–324.
