The editors of Polymers would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2013:
| Aitipamula, Srinivasulu | Cywinski, Piotr J. | Galli, Giancarlo |
| Alves, Wendel A. | Da Silva, Lucas F.M. | Gamstedt, E. Kristofer |
| Bai, Jinbo | Danylyuk, Oksana | Gao, Xiaosheng |
| Barbieri, G. | Dargaville, Tim | Gauthier, Marc |
| Bazuin, C. Geraldine | Davis, Thomas P. | Gigmes, Didier |
| Beales, Paul A. | De Lorenzis, Laura | Gillies, Elizabeth |
| Becer, Remzi | de Morais, A.B. | Giorgetti, Alejandro |
| Beris, A.N. | Deng, Youquan | Giuseppone, Nicolas |
| Bilotta, Antonio | Di Maio, Ernesto | Gloria, Antonio |
| Brinke, Gerrit Ten | Di, Chong-An | Goethals, Eric |
| Buelow, Hannes E. | Domenek, Sandra | Gohy, Jean-François |
| Cai, Liheng | Dressick, Walter J. | Grayson, Scott |
| Cambon, Jean-Baptiste | Dworak, Andrzej | Gregorova, Adriana |
| Carballo, Rosa | Edholm, Olle | Grest, Gary S. |
| Casas, Joan R. | Edwards, Brian | Gruter, Gert-Jan |
| Caseri, Walter Remo | Endo, Takeshi | Guo, Zhanhu |
| Cerqueira, Miguel A. | Estrine, Boris | Halley, Peter |
| Chen, Chih-Ping | Fahma, Farah | Harmandaris, Vagelis A. |
| Cheng, Kai | Faruqi, Mohamed A. | Harries, Kent |
| Chevrot, Claude | Fawcett, James W. | Hayashi, Shotaro |
| Chiang, Donyau | Fechler, Nina | Hayashi, Takashi |
| Choi, Eunsoo | Fedin, Vladimir P. | Heinze, Jürgen |
| Chronakis, Ioannis S. | Ferrier, E. | Hill, Reghan J. |
| Coelho, Mário | Fossum, Eric | Hsieh, Ming-fa |
| Coelhoso, Isabel M. | Foster, E. Johan | Huang, Chih-Feng |
| Cook, Wayne | Frey, H. | Hugi, Erich |
| Hung, Andrew | Malek, Kourosh | Pérez-Gil, Jesús |
| Iemma, Francesca | Malinconico, Mario | Pisula, Wojciech |
| Jeong, Byeongmoon | Manfredi, Gaetano | Pizzi, Antonio |
| Jochen, Kerres | Mara, Freire | Plamper, Felix |
| Kandt, Christian | Marí, Antonio | Plummer, John Christophe |
| Karabiyik, Ufuk | Mariniello, Loredana | Postma, Almar |
| Kasi, Rajeswari M. | Masson, Eric | Pretsch, Thorsten |
| Kawakami, Hiroyoshi | Masubuchi, Yuichi | Price, Gareth |
| Keffer, David J. | Matsumura, Shuichi | Priimagi, Arri |
| Kim, Dong-Pyo | Matsuyama, Hideto | Pum, Dietmar |
| Kim, Jang-ho Jay | Mays, Jimmy | Qiao, Kun |
| Kim, Young Kyoo | Meyer, Franck | Qiu, Li Yan |
| Kimura, Yoshiharu | Michels, Julien | Renò, Filippo |
| Kitahata, Hiroyuki | Mikkonen, Kirsi S. | Reven, Linda |
| Kobayashi, Koichi | Miller, Sandi G. | Rey, Alejandro D. |
| Kontturi, Eero | Miserez, Ali | Riess, Gérard |
| Kremer, Kurt | Mitchell, Jonathan | Rimer, Jeffrey |
| Kroeger, Anja | Miura, Yoshiko | Robeson, L.M. |
| Kubicki, Jim | Morgan, Alexander B. | Rousakis, Theodoros |
| Kubik, Stefan | Morigaki, Kenichi | Rteil, Ahmad |
| Kuckling, Dirk | Moszner, Norbert | Saadatmanesh, Hamid |
| Kuo, Shiao-Wei | Muliana, Anastasia | Saavedra Flores, E.I. |
| Laforgue, Alexis | Müller, Marcus | Sakaguchi, Y. |
| Lalevée, Jacques | Muller-Buschbaum, Peter | Santana, Juan J. |
| Lameiras, Rodrigo | Napoli, Annalisa | Sasaki, Darryl Y. |
| Le Meins, Jean-François | Nijmeijer, Kitty | Schlaad, Helmut |
| Lee, Kwang Pill | Nishikawa, Makiya | Schönherr, Holger |
| Lee, Ren-Shen | Nishiyama, Yoshiharu | Schramm, Christian |
| Lee, Sang-cheon | Oh, John | Seaton, Colin |
| Lee, Young Hak | Okeil, Ayman M. | Serrano, M. Concepción |
| Leung, Christopher K.Y. | Olivares, Andy L. | Shanks, Robert A. |
| Li, Robert K.Y. | Oller, Eva | Shin, Jae Sup |
| Liebner, Falk | Ouyang, Jianyong | Sidorenko, Alexander |
| Lignola, Gian Piero | Ozbakkaloglu, Togay | Singer, B.W. |
| Lima, João Carlos | Paavilainen, Sami | Skirtach, Andre |
| Lokitz, Bradley S. | Panigrahi, S. | Smith, Adam E. |
| Loos, Katja | Papageorgiou, George Z. | Sneed, Lesley |
| Ma, Yuguang | Park, Kinam | Sohn, Youn Soo |
| Maazouz, Abderrahim | Park, O Ok | Stenzel, Martina H. |
| Madbouly, Samy | Patton, Derek | Tervoort, Theo A. |
| Magalhães, Fernao | Pellequer, Jean-luc | Textor, Torsten |
| Majumdar, Apala | Penczek, Stanislaw | Tiwari, Ashutosh |
| Torres, Ll. | Wang, Chien-Lung | Yoshihara, Hiroshi |
| Triantafillou, Thanasis | Wang, Simon | Yuan, Guangcui |
| Trzebicka, Barbara | Wang, Yadong | Yuan, Jiayin |
| Ueno, Takafumi | Wang, Yong | Zauscher, Stefan |
| Uhrich, Kathryn E. | Wienk, Martijn | Zhai, Lei |
| Vaia, Richard A. | Willerth, Stephanie M. | Zhai, Maolin |
| Valentini, Federica | Williams, Roberto | Zhang, Liqun |
| Van Vliet, Krystyn J. | Wojkiewicz, J.L. | Zhou, Yuanxin |
| Vinciguerra, Vittorio | Xie, Zhigang | Zhu, Jintao |
| Visvanathan, R. | Xu, Ben Bin | Zhu, Shiping |
| Wagner, Manfred | Yan, Liang | Ziener, Ulrich |
| Wan, Baolin | Yang, Bai |
© 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).