Polimeri: Plastics and Rubber Journal - (2003-2015) [PDF] | Croatian, English | Society of Plastics and Rubber Engineers, Croatia.
Polimeros - Ciencia e Tecnologia - Articles (1997-present) [HTML, PDF] | Portuguese, selected papers in Spanish, English | Brazilian Polymer Association.
Polymer Chemistry ( Polym. Chem. ) - All issues (2010-2011); Issue #1 of each volume (2012-...) [PDF] | all aspects of synthetic and biological macromolecules | free registration may be required | Royal Society of Chemistry.
Polymer Journal - (1970-2019) | The Society of Polymer Science, Japan.
Polymers - (2009-present) | MDPI.
Polymers in Medicine - Polimery w Medycynie - (2010-present) | Medical Academy in Wroclaw, Poland.
Polymer Testing - (2021-...) | Elsevier.
Portugaliae Electrochimica Acta - Articles (1999-present) [HTML, PDF] | english (mainly), portuguese, french and spanish | Portuguese Electrochemical Society.
Procedia Chemistry - (2009-2016) | e-only product focusing entirely on publishing conference proceedings | Elsevier.
Procedia Earth and Planetary Science - (2009-2017) | e-only product focusing entirely on publishing conference proceedings | Elsevier.
Procedia Environmental Sciences - (2010-2017) | e-only product focusing entirely on publishing conference proceedings | Elsevier.
Proceedings of the Estonian Academy of Sciences - (2008-present); Proceedings of the Estonian Academy of Sciences. Chemistry - (1997-2007).
Proceedings of the Imperial Academy - (1913-1944) [PDF] | Current title: Proceedings of the Japan Academy, Ser. B | interdisciplinary.
Proceedings of the Japan Academy, Series B - Articles (2003-present); also: Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences (1977-2002); Proceedings of the Japan Academy (1945-1977) [PDF].
Proceedings of the National Academy of Sciences of the United States of America ( PNAS ) - (1915-present) [PDF, HTML] | multidisciplinary; chemistry included.
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences ( Proceedings A ) - (1905-1950); Proceedings of the Royal Society of London - (1832-1904).
Processing and Application of Ceramics - (2007-present) | international journal | University of Novi Sad, Serbia.
Progress in Natural Science: Materials International - (2008-present) | Chinese Materials Research Society, International Union of Materials Research Societies | Elsevier.
Progress in Nuclear Science and Technology - Conference proceedings (2011-2014) [PDF] | Atomic Energy Society of Japan.
Progress in Reaction Kinetics and Mechanism - (1999-present) | kinetics and mechanisms of chemical processes in the gas phase and solution of both simple and complex systems | SAGE.
Protein Engineering, Design and Selection ( PEDS ) - Articles (1996-2018) | Prior to 2004: Protein Engineering.
Protein Science - Articles (1992-...(1 year moving wall)) [HTML, PDF] | The Protein Society ; Wiley.
Proteome Science - Articles, Supplemental Data (2003-present) | Archive at PubMed Central .
Pure and Applied Chemistry - Full access (1960-2017), IUPAC Technical Reports and Recommendations (until present) | IUPAC.
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