# Application of Polymers as a Tool in Crystallization--A Review
## 4 Summary and Conclusions
\begin{table}
\begin{tabular}{c c c} \hline \hline Poly(sodium 4-styrenesulfonate) & ZnO & [28] \\ \hline Poly(vinyl alcohol), polyvinylpyrrolidone & ZnO & [29] \\ \hline Molecularly imprinted polymers (oleanolic acid as template, acrylamide as functional monomer, ethylene glycol & \\ dimethacrylate as cross-linker and azobissobutyronitrile as initiator) & \\ \hline Polyacrylamide, poly(vinyl alcohol), poly(ethylene glycol), poly-\(N\)-vinyl pyrrolidone & PbS & [31] \\ \hline Maleic acid copolymers & Calcium orthophosphates & [32] \\ \hline Poly(ethylene oxide) & Copper/poly(ethylene \\ oxide)/low density polyethylene composite & [33] \\ \hline Guar gum, pectin, \(\kappa\)-carrageenanan, gelatin, polyvinylpyrrolidone & Thiamine chloride hydrochloride & [34] \\ \hline Poly(acrylic acid), poly(N-vinyl pyrrolidone), poly(4-vinylphenol) & Ibuprofen & [46] \\ \hline Polymers functionalized from a parent batch of poly(chloromethylstyrene-co-styrene) & Nabumentone & [47] \\ \hline Functionalized poly(N-hydroxyethyl acrylamide) & Ethenzamide & [48] \\ \hline Hydroxypropylmethyl cellulose & Felodipine & [49] \\ \hline Alginate & Lovastatin, indomethacin, & [50] \\ \hline Hydroxypropyl methylcellulose and methylcellulose polymers & Griseofulvin & [51] \\ \hline Hydroxypropyl methylcellulose, polyvinylpyrrolidone), & Griseofulvin, danazol & [52] \\ \hline Epidermal Polymer of vinylpyrrolidone and a copolymer of vinylpyrrolidone and vinylacetate & Sixteen drugs of different chemical nature & [53] \\ \hline Polyvinylpyrrolidone & Celecoxib & [55,56] \\ \hline Nylon 6/6, polypropylene, polyvinylchloride & paracetamol & [59] \\ \hline Polyvinylpyrrolidone, hydroxypropyl methyl cellulose, Kollidone VA64 & Indomethacin & [65] \\ \hline Hydroxypropyl methylcellulose, polyvinylpyrrolidone & Naproxen & [68] \\ \hline Polyvinylpyrrolidone & Naproxen & [69] \\ \hline Polyvinylpyrrolidone & Carvedilol & [70] \\ \hline Poly(vinyl alcohol), polyethylene glycol & Nitrendipine & [71] \\ \hline Poly(ethylene imine) & Eprosartan & [75] \\ \hline Poly(\(N\)-isopropyl acrylamide) & Nitrofurantoin & [76] \\ \hline Hydroxypropylmethyl cellulose, copovidone & Complex impurity & [77] \\ \hline Polyvinylpolypyrrolidone K30 and K90, polyethylenedylocol & Piogltazone & [80] \\ \hline Poly(ethylene glycol)-block-poly(lactic acid) & Tolazamide & [81] \\ \hline Poly(ethylene glycol), poly(ethylene oxide)-poly(propylene oxide) triblock, hydroxypropyl cellulose, poly(acrylic acid), poly(ethylene imine), elastin-like peptide, chitosan & \\ \hline Eudragit RL100 & Griseofulvin & [85] \\ \hline Poly(aspartic acid-citric acid) copolymer, polymaleic acid & Ca\({}_{3}\)(PO4)\({}_{2}\) & [91] \\ \hline Poly(citric acid) & CaSO\({}_{4}\) & [92] \\ \hline Polyaspartic acid/furfurylamine graft copolymer & CaCO\({}_{3}\), Ca\({}_{3}\)(PO4)\({}_{2}\) & [93] \\ \hline Acrylic acid-allyboxy polytinox glutamate copolymer & CaCO\({}_{3}\) & [94] \\ \hline Starch-graft-poly(acrylic acid) & CaCO\({}_{3}\) & [95] \\ \hline Epoxysuccin acid derivative & CaCO\({}_{3}\) & [97] \\ \hline Epoxysuccin acid derivative & CaCO\({}_{3}\), CaSO\({}_{4}\), Ca\({}_{3}\)(PO4)\({}_{2}\) & [98] \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Crystal surface screening/nucleation inhibition: Polymers and crystallized substances. In conclusion, the authors would like to emphasize that the branch of science tackling complicated interactions between crystallizing solutions and polymer additives becomes currently more and more important from both theoretical and practical points of view and therefore is a promising area for further research. Conceptualization: A.M. and M.L. ; investigation: T.W., M.K. and M.L. ; writing--original draft preparation: A.G. and M.L. ; writing--review and editing: A.M. and M.L. ; visualization: M.L. and A.M.; supervision: M.L. ; project administration: M.L. ; funding acquisition: M.L. All authors have read and agreed to the published version of the manuscript. This research was funded by the National Science Centre (POLAND), grant number 2017/26/D/ST8/00050.