1. “The Bad and the Good—Microorganisms in Cultural Heritage Environments—An Update on Biodeterioration and Biotreatment Approaches”
Pyzik, A.; Ciuchcinski, K.; Dziurzynski, M.; Dziewit, L.
Materials 2021, 14(1), 177. https://doi.org/10.3390/ma14010177
Full text available online: https://www.mdpi.com/1996-1944/14/1/177

2. “Chitosan-Based Nanocomposite Polymeric Membranes for Water Purification—A Review”
Spoială, A.; Ilie, C.-I.; Ficai, D.; Ficai, A.; Andronescu, E.
Materials 2021, 14(9), 2091. https://doi.org/10.3390/ma14092091
Full text available online: https://www.mdpi.com/1996-1944/14/9/2091

3. “Synthetic, Mesomorphic, and DFT Investigations of New Nematogenic Polar Naphthyl Benzoate Ester Derivatives”
Al-Zahrani, S.A.; Ahmed, H.A.; El-atawy, M.A.; Abu Al-Ola, K.A.; Omar, A.Z.
Materials 2021, 14(10), 2587. https://doi.org/10.3390/ma14102587
Full text available online: https://www.mdpi.com/1996-1944/14/10/2587

4. “Ion-Imprinted Polymers: Synthesis, Characterization, and Adsorption of Radionuclides”
Kusumkar, V.V.; Galamboš, M.; Viglašová, E.; Daňo, M.; Šmelková, J.
Materials 2021, 14(5), 1083. https://doi.org/10.3390/ma14051083
Full text available online: https://www.mdpi.com/1996-1944/14/5/1083

5. “Polysaccharide-Based Aerogel Production for Biomedical Applications: A Comparative Review”
Guastaferro, M.; Reverchon, E.; Baldino, L.
Materials 2021, 14(7), 1631. https://doi.org/10.3390/ma14071631
Full text available online: https://www.mdpi.com/1996-1944/14/7/1631

6. “Polyelectrolyte Multilayers: An Overview on Fabrication, Properties, and Biomedical and Environmental Applications”
Petrila, L.-M.; Bucatariu, F.; Mihai, M.; Teodosiu, C.
Materials 2021, 14(15), 4152. https://doi.org/10.3390/ma14154152
Full text available online: https://www.mdpi.com/1996-1944/14/15/4152

7. “Alkali Activation of Metallurgical Slags: Reactivity, Chemical Behavior, and Environmental Assessment”
Lancellotti, I.; Piccolo, F.; Traven, K.; Češnovar, M.; Ducman, V.; Leonelli, C.
Materials 2021, 14(3), 639. https://doi.org/10.3390/ma14030639
Full text available online: https://www.mdpi.com/1996-1944/14/3/639

8. “Processability and Mechanical Properties of Thermoplastic Polylactide/Polyhydroxybutyrate (PLA/PHB) Bioblends”
Olejnik, O.; Masek, A.; Zawadziłło, J.
Materials 2021, 14(4), 898. https://doi.org/10.3390/ma14040898
Full text available online: https://www.mdpi.com/1996-1944/14/4/898

9. “Recent Advancements in Plastic Packaging Recycling: A Mini-Review”
Beghetto, V.; Sole, R.; Buranello, C.; Al-Abkal, M.; Facchin, M.
Materials 2021, 14(17), 4782. https://doi.org/10.3390/ma14174782
Full text available online: https://www.mdpi.com/1996-1944/14/17/4782

10. “Potential for and Distribution of Enzymatic Biodegradation of Polystyrene by Environmental Microorganisms”
Hou, L.; Majumder, E.L.-W.
Materials 2021, 14(3), 503. https://doi.org/10.3390/ma14030503
Full text available online: https://www.mdpi.com/1996-1944/14/3/503