Pristine multiwalled carbon nanotubes (P‐MWNTs) were functionalized with 4‐chlorobenzoic acid via “direct” Friedel‐Crafts acylation in polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium. The resultant 4‐chlorobenzoyl‐functionalized MWNTs (F‐MWNTs) were soluble in chlorinated solvents such as dichloromethane, chloroform, and carbon tetrachloride. A large scale of nylon 610/F‐MWNT composite could be conveniently prepared by in situ interfacial polymerization of 1, 6‐hexamethylenediamine (HMDA) in an aqueous phase, and sebacoyl chloride with F‐MWNTs in an organic phase. Similarly, nylon 610/P‐MWNT composite was also prepared for comparison. The state of F‐MWNTs dispersion in nylon 610 matrix was distinctively better than that of P‐MWNTs, which could be clearly discerned by both naked eye and scanning electron microcopy (SEM). As a result, the tensile strength of nylon 610/F‐MWNT composite was 4.9‐fold higher than that of nylon 610/P‐MWNT composite. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 6041–6050, 2008

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Several types of as-received and complementary metal oxide semiconductor (CMOS) thermal simulated 100 mm wafers were used for warpage study under different annealing conditions. The results indicated that as-received wafers showed little increase in warpage up to 1000~ furnace temperature and 61.0 cm/min insertion rate. For the CMOS thermal simulation processed wafers, both the prior amount of oxygen precipitation, A[O~], where A[O~] is the decrease in interstitial oxygen concentration, and bulk microdefect morphology affected warpage. For A[O,] less than ca. 26 ppma, wafers with predominantly octahedral precipitates without associated dislocations plus a low density of small plate-type and dot-like precipitates underwent much less warpage than wafers with predominantly large octahedral precipitates and precipitatedislocation-complexes (PDCs). When the h[Oi] was higher than 26 ppma, the defects consisted of a high density of large octahedral-shaped precipitates and PDCs and thus warpage became inevitable.

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