  To determine if the recently launched Imaging X-ray Polarimetry Explorer
(IXPE) can follow the polarization variations induced by different particle
acceleration mechanisms in blazars jets we simulate observations of a high
synchrotron peak (HSP) blazar variable in polarization degree and angle
according to the theoretical predictions of Tavecchio et al., 2020 (shock
acceleration model), Bodo et al., 2021 (magnetic reconnection model) and
Marscher \& Jorstad, 2021 (Turbulent Extreme Multi-Zone Model). We use the
Monte Carlo tool ixpeobssim to create realistic IXPE data products. We create
simulated light-curves of polarization degree and angle by time-slicing the
simulated data into arbitrary short time bins. We use a $\chi^2$ test to assess
the performance of the observations in detecting the time variability of the
polarization properties. A series of 10 ks long observations permits IXPE to
follow the time variability of the polarization degree in the case of the shock
acceleration model. In the case of the magnetic reconnection model, the nominal
injected model provides the best fit of the simulated IXPE data for time bins
of 5-10 ks, depending on the tested flux level. For the TEMZ model, shorter
time slices of 0.5 ks are needed for obtaining a formally good fit of the
simulated IXPE data with the injected model. On the other hand, we find that a
fit with a constant model provides a $\chi^2$ lower than the fit with the
nominal injected model when using time slices of 20 ks, 60/70 ks, and 5 ks for
the case of the shock acceleration, magnetic reconnection and TEMZ model,
respectively. We conclude that, provided that the statistics of the observation
allows slicing of the data in adequately short time bins, IXPE observations of
an HSP blazar at a typical flux level can detect the time variability predicted
by popular models for particle acceleration in jets.
