# Three subfigures horizontally to each other in one figure

I am having trouble with the subfigures in one main figure. I am using the following preamble and coding for the figures:

\documentclass[11pt]{report}
\usepackage{geometry}
\usepackage{amsmath}
\usepackage{acronym}
\usepackage{times}
\usepackage{amssymb}
\usepackage{mathrsfs}
\usepackage{latexsym}
\usepackage[none]{hyphenat} % no word break
\usepackage{wrapfig}
\usepackage[font={footnotesize,it}]{caption}
\usepackage{url}
\usepackage{titling}
\usepackage{textcomp}
\renewcommand{\thechapter}{\Roman{chapter}}
\renewcommand{\thesection}{\arabic{chapter}.\arabic{section}}
\renewcommand{\thetable}{\arabic{chapter}.\arabic{table}}
\renewcommand{\thefigure}{\arabic{chapter}.\arabic{figure}}
\usepackage{hyperref}
\usepackage{cleveref}
\usepackage{graphics, float}
\usepackage{caption}
\usepackage[pdftex]{graphicx}
\usepackage{epstopdf} %graphics in .eps format
\usepackage{siunitx}
\usepackage{booktabs}
\usepackage{microtype}
\usepackage{subfigure}
\usepackage{subfig}
{\renewcommand{\bibname}{References}}
\usepackage[backend=bibtex,style=numeric, sorting=none]{biblatex}
\usepackage{multirow}
\usepackage{textcomp}
\usepackage{csquotes} %Package biblatex Warning: 'babel/polyglossia' detected but 'csquotes' missing.
\usepackage{listings}
\usepackage{babel,blindtext}
%\usepackage[T1]{fontenc}
\geometry{a4paper} % ... or letter or a4paper or a5paper or ...            %\usepackage[parfill]{parskip}    % Activate to begin paragraphs with an empty line rather than an indent
\DeclareGraphicsRule{.tif}{png}{.png}{convert #1 dirname #1/basename #1 .tif.png}
citecolor=black,
filecolor=black,
urlcolor=blue }
\setlength{\textwidth}{420pt}
\oddsidemargin = 0.5cm
\def \m{$\mu$}
\def \g{$\gamma$}
\def \b{$\beta^-$}
\def \a{$\alpha$}
\newcommand{\unicode}[1]{{}}
\def \PCL{$\text{PCL}_\text{13000}$-$\text{PEO}_\text{5000}$}
\def \PEO{$\text{PCL}_\text{1100}$-$\text{PEO}_\text{550}$}


   \begin{figure}
\begin{subfigure}{0.36\textwidth}
\includegraphics[scale=0.72]{PolymersomePCLPEO.JPEG}
\caption{PEO-PCL}
\label{fig:PCLPEO1}
\end{subfigure}
\begin{subfigure}{0.34\textwidth}
\includegraphics[scale=0.4]{PEO.JPEG}
\caption{PEO}
\label{fig:PEO1}
\end{subfigure}
\begin{subfigure}{0.32\textwidth}
\includegraphics[scale=0.82]{PCL.JPEG}
\caption{PCL}
\label{fig:PCL1}
\end{subfigure}
\caption{In figure a, the chemical structure of block copolymer PCL-PEO can be viewed. In figure b and c, the chemical structures of respectively polymer PEO and PCl can be viewed.}\label{fig:PCLPEO2}


\end{figure}

It now looks like this:

I would like them to be horizontally next to each other with some spacing in between, but I cannot figure this out..

Try removing any imports of the subfigure and subfig packages; the former is deprecated, and the latter certainly should not be used at the same time as the former. Replacing them with the subcaption package should accomplish what you want (see, for example, here).
• The widths you've specified in your example seem to add up to more than \textwidth. Is the problem solved if you decrease them all to 0.25\textwidth`, for example? Feb 24 '15 at 10:08