Thermomechanical Properties of Poly(methyl methacrylate)s

Oct 30, 2008 - Flow system does the dirty work. Organic chemists optimizing a reaction, like chefs perfecting a dish, execute a single transformation...
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Macromolecules 2008, 41, 8951

8951

CORRECTIONS

Renqiang Yang, Renyu Tian, Qiong Hou, Wei Yang, and Yong Cao*: Synthesis and Optical and Electroluminescent Properties of Novel Conjugated Copolymers Derived from Fluorene and Benzoselenadiazole. Volume 36, Number 20, 2003, pp 7453–7460. Page 7454, left column, last line. It should read “Found: C, 21.39; H, 0.80; N, 8.48”. MA802220Y 10.1021/ma802220y Published on Web 10/22/2008

Edward T. Kopesky, Timothy S. Haddad, Robert E. Cohen,* and Gareth H. McKinley*: Thermomechanical Properties of Poly(methyl methacrylate)s Containing Tethered and Untethered Polyhedral Oligomeric Silsesquioxanes. Volume 37, Number 24, 2004, pp 8992–9004. Page 8994. There was a typographical error in the molecular weight of polymer COCp25. It should have been printed as 720 000 g/mol, not 20 000 g/mol. Table 1 is reproduced here with the corrected Mw value. Table 1. Polymers Used in the Study polymer name HP HP2 COiBu15 CO1iBu25 CO2iBU25 COCp25

POSS type

wt % POSS

mol % POSS

Mw (g/mol)

PDI

xw

isobutyl isobutyl isobutyl cyclopentyl

0 0 15 25 25 25

0 0 2.1 3.4 3.4 3.2

80 200 260 000 205 000 62 700 560 000 720 000

1.68 1.89 2.26 1.73 2.64 3.21

800 2600 1740 490 4350 5590

MA802327E 10.1021/ma802327e Published on Web 10/31/2008